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Finding the Fourth Proportional to 103,648.68, 155,473.56 and 56,876.04

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Solution

The fourth proportional to 103,648.68, 155,473.56 and 56,876.04 is: 85,314.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,648.68 : 155,473.56 = 56,876.04 : x
  2. Step 2: Convert to fraction form
    103,648.68/155,473.56 = 56,876.04/x
  3. Step 3: Cross multiply
    103,648.68x = 155,473.56 × 56,876.04
  4. Step 4: Simplify right side
    103,648.68x = 8,842,720,417.50
  5. Step 5: Solve for x
    x = 8,842,720,417.50/103,648.68
  6. Step 6: Final answer
    x = 85,314.36

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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.