Home / 81,280.13-112,164.93-45,470.43

Finding the Fourth Proportional to 81,280.13, 112,164.93 and 45,470.43

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Solution

The fourth proportional to 81,280.13, 112,164.93 and 45,470.43 is: 62,748.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,280.13 : 112,164.93 = 45,470.43 : x
  2. Step 2: Convert to fraction form
    81,280.13/112,164.93 = 45,470.43/x
  3. Step 3: Cross multiply
    81,280.13x = 112,164.93 × 45,470.43
  4. Step 4: Simplify right side
    81,280.13x = 5,100,187,598.02
  5. Step 5: Solve for x
    x = 5,100,187,598.02/81,280.13
  6. Step 6: Final answer
    x = 62,748.27

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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.