Home / 87,345,787.20-130,819,615.20-51,513,979.20

Finding the Fourth Proportional to 87,345,787.20, 130,819,615.20 and 51,513,979.20

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Solution

The fourth proportional to 87,345,787.20, 130,819,615.20 and 51,513,979.20 is: 77,153,565.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,345,787.20 : 130,819,615.20 = 51,513,979.20 : x
  2. Step 2: Convert to fraction form
    87,345,787.20/130,819,615.20 = 51,513,979.20/x
  3. Step 3: Cross multiply
    87,345,787.20x = 130,819,615.20 × 51,513,979.20
  4. Step 4: Simplify right side
    87,345,787.20x = 6,739,038,936,364,804
  5. Step 5: Solve for x
    x = 6,739,038,936,364,804/87,345,787.20
  6. Step 6: Final answer
    x = 77,153,565.76

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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.