Home / 86,291,587.66-129,437,382.56-20,712,725.24

Finding the Fourth Proportional to 86,291,587.66, 129,437,382.56 and 20,712,725.24

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Solution

The fourth proportional to 86,291,587.66, 129,437,382.56 and 20,712,725.24 is: 31,069,088.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,291,587.66 : 129,437,382.56 = 20,712,725.24 : x
  2. Step 2: Convert to fraction form
    86,291,587.66/129,437,382.56 = 20,712,725.24/x
  3. Step 3: Cross multiply
    86,291,587.66x = 129,437,382.56 × 20,712,725.24
  4. Step 4: Simplify right side
    86,291,587.66x = 2,681,000,940,750,047.50
  5. Step 5: Solve for x
    x = 2,681,000,940,750,047.50/86,291,587.66
  6. Step 6: Final answer
    x = 31,069,088.12

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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.