Home / 81,143.16-111,979.85-45,337.11

Finding the Fourth Proportional to 81,143.16, 111,979.85 and 45,337.11

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Solution

The fourth proportional to 81,143.16, 111,979.85 and 45,337.11 is: 62,566.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,143.16 : 111,979.85 = 45,337.11 : x
  2. Step 2: Convert to fraction form
    81,143.16/111,979.85 = 45,337.11/x
  3. Step 3: Cross multiply
    81,143.16x = 111,979.85 × 45,337.11
  4. Step 4: Simplify right side
    81,143.16x = 5,076,842,550.55
  5. Step 5: Solve for x
    x = 5,076,842,550.55/81,143.16
  6. Step 6: Final answer
    x = 62,566.49

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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.