Home / 81,835.20-112,613.76-72,426.24

Finding the Fourth Proportional to 81,835.20, 112,613.76 and 72,426.24

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Solution

The fourth proportional to 81,835.20, 112,613.76 and 72,426.24 is: 99,666.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,835.20 : 112,613.76 = 72,426.24 : x
  2. Step 2: Convert to fraction form
    81,835.20/112,613.76 = 72,426.24/x
  3. Step 3: Cross multiply
    81,835.20x = 112,613.76 × 72,426.24
  4. Step 4: Simplify right side
    81,835.20x = 8,156,191,209.06
  5. Step 5: Solve for x
    x = 8,156,191,209.06/81,835.20
  6. Step 6: Final answer
    x = 99,666.05

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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.