Home / 38,712,020,838.72-53,420,516,220.80-21,330,391,629.44

Finding the Fourth Proportional to 38,712,020,838.72, 53,420,516,220.80 and 21,330,391,629.44

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Solution

The fourth proportional to 38,712,020,838.72, 53,420,516,220.80 and 21,330,391,629.44 is: 29,434,798,477.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,712,020,838.72 : 53,420,516,220.80 = 21,330,391,629.44 : x
  2. Step 2: Convert to fraction form
    38,712,020,838.72/53,420,516,220.80 = 21,330,391,629.44/x
  3. Step 3: Cross multiply
    38,712,020,838.72x = 53,420,516,220.80 × 21,330,391,629.44
  4. Step 4: Simplify right side
    38,712,020,838.72x = 1,139,480,532,036,516,052,992
  5. Step 5: Solve for x
    x = 1,139,480,532,036,516,052,992/38,712,020,838.72
  6. Step 6: Final answer
    x = 29,434,798,477.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.