Home / 80,812.76-111,513.66-45,001.40

Finding the Fourth Proportional to 80,812.76, 111,513.66 and 45,001.40

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Solution

The fourth proportional to 80,812.76, 111,513.66 and 45,001.40 is: 62,097.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,812.76 : 111,513.66 = 45,001.40 : x
  2. Step 2: Convert to fraction form
    80,812.76/111,513.66 = 45,001.40/x
  3. Step 3: Cross multiply
    80,812.76x = 111,513.66 × 45,001.40
  4. Step 4: Simplify right side
    80,812.76x = 5,018,270,819.12
  5. Step 5: Solve for x
    x = 5,018,270,819.12/80,812.76
  6. Step 6: Final answer
    x = 62,097.51

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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.