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Finding the Fourth Proportional to 86,776.74, 130,165.11 and 45,304.74

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Solution

The fourth proportional to 86,776.74, 130,165.11 and 45,304.74 is: 67,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,776.74 : 130,165.11 = 45,304.74 : x
  2. Step 2: Convert to fraction form
    86,776.74/130,165.11 = 45,304.74/x
  3. Step 3: Cross multiply
    86,776.74x = 130,165.11 × 45,304.74
  4. Step 4: Simplify right side
    86,776.74x = 5,897,096,465.62
  5. Step 5: Solve for x
    x = 5,897,096,465.62/86,776.74
  6. Step 6: Final answer
    x = 67,957.11

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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.