Home / 87,049,439.02-120,128,220.36-47,890,375.69

Finding the Fourth Proportional to 87,049,439.02, 120,128,220.36 and 47,890,375.69

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Solution

The fourth proportional to 87,049,439.02, 120,128,220.36 and 47,890,375.69 is: 66,088,715.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,049,439.02 : 120,128,220.36 = 47,890,375.69 : x
  2. Step 2: Convert to fraction form
    87,049,439.02/120,128,220.36 = 47,890,375.69/x
  3. Step 3: Cross multiply
    87,049,439.02x = 120,128,220.36 × 47,890,375.69
  4. Step 4: Simplify right side
    87,049,439.02x = 5,752,985,604,011,507
  5. Step 5: Solve for x
    x = 5,752,985,604,011,507/87,049,439.02
  6. Step 6: Final answer
    x = 66,088,715.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.