Home / 38,660,420.89-53,349,946.01-21,255,730.57

Finding the Fourth Proportional to 38,660,420.89, 53,349,946.01 and 21,255,730.57

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Solution

The fourth proportional to 38,660,420.89, 53,349,946.01 and 21,255,730.57 is: 29,332,119.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,660,420.89 : 53,349,946.01 = 21,255,730.57 : x
  2. Step 2: Convert to fraction form
    38,660,420.89/53,349,946.01 = 21,255,730.57/x
  3. Step 3: Cross multiply
    38,660,420.89x = 53,349,946.01 × 21,255,730.57
  4. Step 4: Simplify right side
    38,660,420.89x = 1,133,992,078,206,328
  5. Step 5: Solve for x
    x = 1,133,992,078,206,328/38,660,420.89
  6. Step 6: Final answer
    x = 29,332,119.31

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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.