Home / 38,779,520-53,518,131.90-21,375,825.96

Finding the Fourth Proportional to 38,779,520, 53,518,131.90 and 21,375,825.96

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Solution

The fourth proportional to 38,779,520, 53,518,131.90 and 21,375,825.96 is: 29,499,959.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,779,520 : 53,518,131.90 = 21,375,825.96 : x
  2. Step 2: Convert to fraction form
    38,779,520/53,518,131.90 = 21,375,825.96/x
  3. Step 3: Cross multiply
    38,779,520x = 53,518,131.90 × 21,375,825.96
  4. Step 4: Simplify right side
    38,779,520x = 1,143,994,273,198,724.25
  5. Step 5: Solve for x
    x = 1,143,994,273,198,724.25/38,779,520
  6. Step 6: Final answer
    x = 29,499,959.60

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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.