Home / 81,423.12-112,363.25-45,613.47

Finding the Fourth Proportional to 81,423.12, 112,363.25 and 45,613.47

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Solution

The fourth proportional to 81,423.12, 112,363.25 and 45,613.47 is: 62,946.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,423.12 : 112,363.25 = 45,613.47 : x
  2. Step 2: Convert to fraction form
    81,423.12/112,363.25 = 45,613.47/x
  3. Step 3: Cross multiply
    81,423.12x = 112,363.25 × 45,613.47
  4. Step 4: Simplify right side
    81,423.12x = 5,125,277,504.91
  5. Step 5: Solve for x
    x = 5,125,277,504.91/81,423.12
  6. Step 6: Final answer
    x = 62,946.22

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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.