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Finding the Fourth Proportional to 87,065.66, 120,099.70 and 54,749.13

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Solution

The fourth proportional to 87,065.66, 120,099.70 and 54,749.13 is: 75,521.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,065.66 : 120,099.70 = 54,749.13 : x
  2. Step 2: Convert to fraction form
    87,065.66/120,099.70 = 54,749.13/x
  3. Step 3: Cross multiply
    87,065.66x = 120,099.70 × 54,749.13
  4. Step 4: Simplify right side
    87,065.66x = 6,575,354,088.26
  5. Step 5: Solve for x
    x = 6,575,354,088.26/87,065.66
  6. Step 6: Final answer
    x = 75,521.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.