Home / 81,288.27-112,216.17-61,152.84

Finding the Fourth Proportional to 81,288.27, 112,216.17 and 61,152.84

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Solution

The fourth proportional to 81,288.27, 112,216.17 and 61,152.84 is: 84,419.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,288.27 : 112,216.17 = 61,152.84 : x
  2. Step 2: Convert to fraction form
    81,288.27/112,216.17 = 61,152.84/x
  3. Step 3: Cross multiply
    81,288.27x = 112,216.17 × 61,152.84
  4. Step 4: Simplify right side
    81,288.27x = 6,862,336,775.46
  5. Step 5: Solve for x
    x = 6,862,336,775.46/81,288.27
  6. Step 6: Final answer
    x = 84,419.77

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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.