Home / 80,925.12-111,613.36-52,639.84

Finding the Fourth Proportional to 80,925.12, 111,613.36 and 52,639.84

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Solution

The fourth proportional to 80,925.12, 111,613.36 and 52,639.84 is: 72,601.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,925.12 : 111,613.36 = 52,639.84 : x
  2. Step 2: Convert to fraction form
    80,925.12/111,613.36 = 52,639.84/x
  3. Step 3: Cross multiply
    80,925.12x = 111,613.36 × 52,639.84
  4. Step 4: Simplify right side
    80,925.12x = 5,875,309,412.26
  5. Step 5: Solve for x
    x = 5,875,309,412.26/80,925.12
  6. Step 6: Final answer
    x = 72,601.80

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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.