Home / 81,423.09-112,363.61-45,126.86

Finding the Fourth Proportional to 81,423.09, 112,363.61 and 45,126.86

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Solution

The fourth proportional to 81,423.09, 112,363.61 and 45,126.86 is: 62,274.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,423.09 : 112,363.61 = 45,126.86 : x
  2. Step 2: Convert to fraction form
    81,423.09/112,363.61 = 45,126.86/x
  3. Step 3: Cross multiply
    81,423.09x = 112,363.61 × 45,126.86
  4. Step 4: Simplify right side
    81,423.09x = 5,070,616,110.11
  5. Step 5: Solve for x
    x = 5,070,616,110.11/81,423.09
  6. Step 6: Final answer
    x = 62,274.92

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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.