Home / 42,534,417.20-63,801,625.80-20,979,345.20

Finding the Fourth Proportional to 42,534,417.20, 63,801,625.80 and 20,979,345.20

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Solution

The fourth proportional to 42,534,417.20, 63,801,625.80 and 20,979,345.20 is: 31,469,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,534,417.20 : 63,801,625.80 = 20,979,345.20 : x
  2. Step 2: Convert to fraction form
    42,534,417.20/63,801,625.80 = 20,979,345.20/x
  3. Step 3: Cross multiply
    42,534,417.20x = 63,801,625.80 × 20,979,345.20
  4. Step 4: Simplify right side
    42,534,417.20x = 1,338,516,331,979,426
  5. Step 5: Solve for x
    x = 1,338,516,331,979,426/42,534,417.20
  6. Step 6: Final answer
    x = 31,469,017.80

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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.