Home / 42,646,542.70-63,969,814.05-21,084,472.30

Finding the Fourth Proportional to 42,646,542.70, 63,969,814.05 and 21,084,472.30

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Solution

The fourth proportional to 42,646,542.70, 63,969,814.05 and 21,084,472.30 is: 31,626,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,646,542.70 : 63,969,814.05 = 21,084,472.30 : x
  2. Step 2: Convert to fraction form
    42,646,542.70/63,969,814.05 = 21,084,472.30/x
  3. Step 3: Cross multiply
    42,646,542.70x = 63,969,814.05 × 21,084,472.30
  4. Step 4: Simplify right side
    42,646,542.70x = 1,348,769,772,373,375.75
  5. Step 5: Solve for x
    x = 1,348,769,772,373,375.75/42,646,542.70
  6. Step 6: Final answer
    x = 31,626,708.45

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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.