Home / 66,129,612.40-99,017,471.40-42,064,793.20

Finding the Fourth Proportional to 66,129,612.40, 99,017,471.40 and 42,064,793.20

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Solution

The fourth proportional to 66,129,612.40, 99,017,471.40 and 42,064,793.20 is: 62,984,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,129,612.40 : 99,017,471.40 = 42,064,793.20 : x
  2. Step 2: Convert to fraction form
    66,129,612.40/99,017,471.40 = 42,064,793.20/x
  3. Step 3: Cross multiply
    66,129,612.40x = 99,017,471.40 × 42,064,793.20
  4. Step 4: Simplify right side
    66,129,612.40x = 4,165,149,457,627,915
  5. Step 5: Solve for x
    x = 4,165,149,457,627,915/66,129,612.40
  6. Step 6: Final answer
    x = 62,984,634.36

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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.