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Finding the Fourth Proportional to 101,989.60, 152,925 and 39,587.20

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Solution

The fourth proportional to 101,989.60, 152,925 and 39,587.20 is: 59,357.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,989.60 : 152,925 = 39,587.20 : x
  2. Step 2: Convert to fraction form
    101,989.60/152,925 = 39,587.20/x
  3. Step 3: Cross multiply
    101,989.60x = 152,925 × 39,587.20
  4. Step 4: Simplify right side
    101,989.60x = 6,053,872,560
  5. Step 5: Solve for x
    x = 6,053,872,560/101,989.60
  6. Step 6: Final answer
    x = 59,357.74

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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.