Home / 42,534,426.70-63,801,640.05-20,979,354.70

Finding the Fourth Proportional to 42,534,426.70, 63,801,640.05 and 20,979,354.70

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Solution

The fourth proportional to 42,534,426.70, 63,801,640.05 and 20,979,354.70 is: 31,469,032.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,534,426.70 : 63,801,640.05 = 20,979,354.70 : x
  2. Step 2: Convert to fraction form
    42,534,426.70/63,801,640.05 = 20,979,354.70/x
  3. Step 3: Cross multiply
    42,534,426.70x = 63,801,640.05 × 20,979,354.70
  4. Step 4: Simplify right side
    42,534,426.70x = 1,338,517,237,050,675.50
  5. Step 5: Solve for x
    x = 1,338,517,237,050,675.50/42,534,426.70
  6. Step 6: Final answer
    x = 31,469,032.05

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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.