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Finding the Fourth Proportional to 76,335.26, 105,355.26 and 42,354.68

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Solution

The fourth proportional to 76,335.26, 105,355.26 and 42,354.68 is: 58,456.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,335.26 : 105,355.26 = 42,354.68 : x
  2. Step 2: Convert to fraction form
    76,335.26/105,355.26 = 42,354.68/x
  3. Step 3: Cross multiply
    76,335.26x = 105,355.26 × 42,354.68
  4. Step 4: Simplify right side
    76,335.26x = 4,462,287,585.07
  5. Step 5: Solve for x
    x = 4,462,287,585.07/76,335.26
  6. Step 6: Final answer
    x = 58,456.44

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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.