Home / 86,289,049.80-129,433,574.70-72,684,160.20

Finding the Fourth Proportional to 86,289,049.80, 129,433,574.70 and 72,684,160.20

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Solution

The fourth proportional to 86,289,049.80, 129,433,574.70 and 72,684,160.20 is: 109,026,240.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,289,049.80 : 129,433,574.70 = 72,684,160.20 : x
  2. Step 2: Convert to fraction form
    86,289,049.80/129,433,574.70 = 72,684,160.20/x
  3. Step 3: Cross multiply
    86,289,049.80x = 129,433,574.70 × 72,684,160.20
  4. Step 4: Simplify right side
    86,289,049.80x = 9,407,770,678,753,468
  5. Step 5: Solve for x
    x = 9,407,770,678,753,468/86,289,049.80
  6. Step 6: Final answer
    x = 109,026,240.30

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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.