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Finding the Fourth Proportional to 78,842.60, 118,282.80 and 26,252.56

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Solution

The fourth proportional to 78,842.60, 118,282.80 and 26,252.56 is: 39,385.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,842.60 : 118,282.80 = 26,252.56 : x
  2. Step 2: Convert to fraction form
    78,842.60/118,282.80 = 26,252.56/x
  3. Step 3: Cross multiply
    78,842.60x = 118,282.80 × 26,252.56
  4. Step 4: Simplify right side
    78,842.60x = 3,105,226,303.97
  5. Step 5: Solve for x
    x = 3,105,226,303.97/78,842.60
  6. Step 6: Final answer
    x = 39,385.13

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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.