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Finding the Fourth Proportional to 74,981.90, 103,478.14 and 43,150.88

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Solution

The fourth proportional to 74,981.90, 103,478.14 and 43,150.88 is: 59,550.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,981.90 : 103,478.14 = 43,150.88 : x
  2. Step 2: Convert to fraction form
    74,981.90/103,478.14 = 43,150.88/x
  3. Step 3: Cross multiply
    74,981.90x = 103,478.14 × 43,150.88
  4. Step 4: Simplify right side
    74,981.90x = 4,465,172,801.76
  5. Step 5: Solve for x
    x = 4,465,172,801.76/74,981.90
  6. Step 6: Final answer
    x = 59,550.01

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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.