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Finding the Fourth Proportional to 86,550.90, 129,826.35 and 57,002.10

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Solution

The fourth proportional to 86,550.90, 129,826.35 and 57,002.10 is: 85,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,550.90 : 129,826.35 = 57,002.10 : x
  2. Step 2: Convert to fraction form
    86,550.90/129,826.35 = 57,002.10/x
  3. Step 3: Cross multiply
    86,550.90x = 129,826.35 × 57,002.10
  4. Step 4: Simplify right side
    86,550.90x = 7,400,374,585.34
  5. Step 5: Solve for x
    x = 7,400,374,585.34/86,550.90
  6. Step 6: Final answer
    x = 85,503.15

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Similar ratio
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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.