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Finding the Fourth Proportional to 86,792.79, 129,978.95 and 60,063.88

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Solution

The fourth proportional to 86,792.79, 129,978.95 and 60,063.88 is: 89,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,792.79 : 129,978.95 = 60,063.88 : x
  2. Step 2: Convert to fraction form
    86,792.79/129,978.95 = 60,063.88/x
  3. Step 3: Cross multiply
    86,792.79x = 129,978.95 × 60,063.88
  4. Step 4: Simplify right side
    86,792.79x = 7,807,040,055.33
  5. Step 5: Solve for x
    x = 7,807,040,055.33/86,792.79
  6. Step 6: Final answer
    x = 89,950.33

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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.