Home / 86,539.74-129,929.09-59,819.87

Finding the Fourth Proportional to 86,539.74, 129,929.09 and 59,819.87

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Solution

The fourth proportional to 86,539.74, 129,929.09 and 59,819.87 is: 89,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,539.74 : 129,929.09 = 59,819.87 : x
  2. Step 2: Convert to fraction form
    86,539.74/129,929.09 = 59,819.87/x
  3. Step 3: Cross multiply
    86,539.74x = 129,929.09 × 59,819.87
  4. Step 4: Simplify right side
    86,539.74x = 7,772,340,324.27
  5. Step 5: Solve for x
    x = 7,772,340,324.27/86,539.74
  6. Step 6: Final answer
    x = 89,812.38

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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.