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Finding the Fourth Proportional to 84,435.52, 126,798.17 and 74,969.23

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Solution

The fourth proportional to 84,435.52, 126,798.17 and 74,969.23 is: 112,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,435.52 : 126,798.17 = 74,969.23 : x
  2. Step 2: Convert to fraction form
    84,435.52/126,798.17 = 74,969.23/x
  3. Step 3: Cross multiply
    84,435.52x = 126,798.17 × 74,969.23
  4. Step 4: Simplify right side
    84,435.52x = 9,505,960,478.47
  5. Step 5: Solve for x
    x = 9,505,960,478.47/84,435.52
  6. Step 6: Final answer
    x = 112,582.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.