Home / 55,138.20-76,088.52-29,987.72

Finding the Fourth Proportional to 55,138.20, 76,088.52 and 29,987.72

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Solution

The fourth proportional to 55,138.20, 76,088.52 and 29,987.72 is: 41,381.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,138.20 : 76,088.52 = 29,987.72 : x
  2. Step 2: Convert to fraction form
    55,138.20/76,088.52 = 29,987.72/x
  3. Step 3: Cross multiply
    55,138.20x = 76,088.52 × 29,987.72
  4. Step 4: Simplify right side
    55,138.20x = 2,281,721,232.97
  5. Step 5: Solve for x
    x = 2,281,721,232.97/55,138.20
  6. Step 6: Final answer
    x = 41,381.86

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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.