Home / 81,520.29-112,507.37-54,294.87

Finding the Fourth Proportional to 81,520.29, 112,507.37 and 54,294.87

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Solution

The fourth proportional to 81,520.29, 112,507.37 and 54,294.87 is: 74,933.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,520.29 : 112,507.37 = 54,294.87 : x
  2. Step 2: Convert to fraction form
    81,520.29/112,507.37 = 54,294.87/x
  3. Step 3: Cross multiply
    81,520.29x = 112,507.37 × 54,294.87
  4. Step 4: Simplify right side
    81,520.29x = 6,108,573,028.19
  5. Step 5: Solve for x
    x = 6,108,573,028.19/81,520.29
  6. Step 6: Final answer
    x = 74,933.16

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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.