Home / 87,036.12-120,113.28-51,224.40

Finding the Fourth Proportional to 87,036.12, 120,113.28 and 51,224.40

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Solution

The fourth proportional to 87,036.12, 120,113.28 and 51,224.40 is: 70,691.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,036.12 : 120,113.28 = 51,224.40 : x
  2. Step 2: Convert to fraction form
    87,036.12/120,113.28 = 51,224.40/x
  3. Step 3: Cross multiply
    87,036.12x = 120,113.28 × 51,224.40
  4. Step 4: Simplify right side
    87,036.12x = 6,152,730,700.03
  5. Step 5: Solve for x
    x = 6,152,730,700.03/87,036.12
  6. Step 6: Final answer
    x = 70,691.69

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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.