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Finding the Fourth Proportional to 21,888,045.30, 32,832,067.95 and 20,712,314.10

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Solution

The fourth proportional to 21,888,045.30, 32,832,067.95 and 20,712,314.10 is: 31,068,471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888,045.30 : 32,832,067.95 = 20,712,314.10 : x
  2. Step 2: Convert to fraction form
    21,888,045.30/32,832,067.95 = 20,712,314.10/x
  3. Step 3: Cross multiply
    21,888,045.30x = 32,832,067.95 × 20,712,314.10
  4. Step 4: Simplify right side
    21,888,045.30x = 680,028,103,932,943.12
  5. Step 5: Solve for x
    x = 680,028,103,932,943.12/21,888,045.30
  6. Step 6: Final answer
    x = 31,068,471.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.