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Finding the Fourth Proportional to 81,275.68, 112,159.92 and 45,465.52

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Solution

The fourth proportional to 81,275.68, 112,159.92 and 45,465.52 is: 62,742.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,275.68 : 112,159.92 = 45,465.52 : x
  2. Step 2: Convert to fraction form
    81,275.68/112,159.92 = 45,465.52/x
  3. Step 3: Cross multiply
    81,275.68x = 112,159.92 × 45,465.52
  4. Step 4: Simplify right side
    81,275.68x = 5,099,409,085.96
  5. Step 5: Solve for x
    x = 5,099,409,085.96/81,275.68
  6. Step 6: Final answer
    x = 62,742.13

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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.