Home / 42,534,417.70-63,801,626.55-20,979,345.70

Finding the Fourth Proportional to 42,534,417.70, 63,801,626.55 and 20,979,345.70

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Solution

The fourth proportional to 42,534,417.70, 63,801,626.55 and 20,979,345.70 is: 31,469,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,534,417.70 : 63,801,626.55 = 20,979,345.70 : x
  2. Step 2: Convert to fraction form
    42,534,417.70/63,801,626.55 = 20,979,345.70/x
  3. Step 3: Cross multiply
    42,534,417.70x = 63,801,626.55 × 20,979,345.70
  4. Step 4: Simplify right side
    42,534,417.70x = 1,338,516,379,614,748.25
  5. Step 5: Solve for x
    x = 1,338,516,379,614,748.25/42,534,417.70
  6. Step 6: Final answer
    x = 31,469,018.55

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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.