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Finding the Fourth Proportional to 86,306.55, 129,472.59 and 44,210.45

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Solution

The fourth proportional to 86,306.55, 129,472.59 and 44,210.45 is: 66,322.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,306.55 : 129,472.59 = 44,210.45 : x
  2. Step 2: Convert to fraction form
    86,306.55/129,472.59 = 44,210.45/x
  3. Step 3: Cross multiply
    86,306.55x = 129,472.59 × 44,210.45
  4. Step 4: Simplify right side
    86,306.55x = 5,724,040,819.20
  5. Step 5: Solve for x
    x = 5,724,040,819.20/86,306.55
  6. Step 6: Final answer
    x = 66,322.21

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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.