Home / 78,411.12-108,199.50-44,412.78

Finding the Fourth Proportional to 78,411.12, 108,199.50 and 44,412.78

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Solution

The fourth proportional to 78,411.12, 108,199.50 and 44,412.78 is: 61,285.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,411.12 : 108,199.50 = 44,412.78 : x
  2. Step 2: Convert to fraction form
    78,411.12/108,199.50 = 44,412.78/x
  3. Step 3: Cross multiply
    78,411.12x = 108,199.50 × 44,412.78
  4. Step 4: Simplify right side
    78,411.12x = 4,805,440,589.61
  5. Step 5: Solve for x
    x = 4,805,440,589.61/78,411.12
  6. Step 6: Final answer
    x = 61,285.19

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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.