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Finding the Fourth Proportional to 88,685.60, 133,028.40 and 42,029.60

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Solution

The fourth proportional to 88,685.60, 133,028.40 and 42,029.60 is: 63,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,685.60 : 133,028.40 = 42,029.60 : x
  2. Step 2: Convert to fraction form
    88,685.60/133,028.40 = 42,029.60/x
  3. Step 3: Cross multiply
    88,685.60x = 133,028.40 × 42,029.60
  4. Step 4: Simplify right side
    88,685.60x = 5,591,130,440.64
  5. Step 5: Solve for x
    x = 5,591,130,440.64/88,685.60
  6. Step 6: Final answer
    x = 63,044.40

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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.