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Finding the Fourth Proportional to 103,881.80, 155,830.80 and 44,719.40

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Solution

The fourth proportional to 103,881.80, 155,830.80 and 44,719.40 is: 67,082.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,881.80 : 155,830.80 = 44,719.40 : x
  2. Step 2: Convert to fraction form
    103,881.80/155,830.80 = 44,719.40/x
  3. Step 3: Cross multiply
    103,881.80x = 155,830.80 × 44,719.40
  4. Step 4: Simplify right side
    103,881.80x = 6,968,659,877.52
  5. Step 5: Solve for x
    x = 6,968,659,877.52/103,881.80
  6. Step 6: Final answer
    x = 67,082.59

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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.