Home / 81,788.13-112,864.62-45,981.45

Finding the Fourth Proportional to 81,788.13, 112,864.62 and 45,981.45

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Solution

The fourth proportional to 81,788.13, 112,864.62 and 45,981.45 is: 63,452.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788.13 : 112,864.62 = 45,981.45 : x
  2. Step 2: Convert to fraction form
    81,788.13/112,864.62 = 45,981.45/x
  3. Step 3: Cross multiply
    81,788.13x = 112,864.62 × 45,981.45
  4. Step 4: Simplify right side
    81,788.13x = 5,189,678,881.30
  5. Step 5: Solve for x
    x = 5,189,678,881.30/81,788.13
  6. Step 6: Final answer
    x = 63,452.71

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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.