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Finding the Fourth Proportional to 86,616.84, 129,966.36 and 60,003.72

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Solution

The fourth proportional to 86,616.84, 129,966.36 and 60,003.72 is: 90,034.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,616.84 : 129,966.36 = 60,003.72 : x
  2. Step 2: Convert to fraction form
    86,616.84/129,966.36 = 60,003.72/x
  3. Step 3: Cross multiply
    86,616.84x = 129,966.36 × 60,003.72
  4. Step 4: Simplify right side
    86,616.84x = 7,798,465,074.86
  5. Step 5: Solve for x
    x = 7,798,465,074.86/86,616.84
  6. Step 6: Final answer
    x = 90,034.05

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1.5x scale

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.