Home / 87,219,428.60-130,687,425.30-72,764,233.40

Finding the Fourth Proportional to 87,219,428.60, 130,687,425.30 and 72,764,233.40

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Solution

The fourth proportional to 87,219,428.60, 130,687,425.30 and 72,764,233.40 is: 109,028,119.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,219,428.60 : 130,687,425.30 = 72,764,233.40 : x
  2. Step 2: Convert to fraction form
    87,219,428.60/130,687,425.30 = 72,764,233.40/x
  3. Step 3: Cross multiply
    87,219,428.60x = 130,687,425.30 × 72,764,233.40
  4. Step 4: Simplify right side
    87,219,428.60x = 9,509,370,316,974,266
  5. Step 5: Solve for x
    x = 9,509,370,316,974,266/87,219,428.60
  6. Step 6: Final answer
    x = 109,028,119.88

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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.