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Finding the Fourth Proportional to 60,132.48, 90,172.64 and 28,551.66

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Solution

The fourth proportional to 60,132.48, 90,172.64 and 28,551.66 is: 42,815.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,132.48 : 90,172.64 = 28,551.66 : x
  2. Step 2: Convert to fraction form
    60,132.48/90,172.64 = 28,551.66/x
  3. Step 3: Cross multiply
    60,132.48x = 90,172.64 × 28,551.66
  4. Step 4: Simplify right side
    60,132.48x = 2,574,578,558.58
  5. Step 5: Solve for x
    x = 2,574,578,558.58/60,132.48
  6. Step 6: Final answer
    x = 42,815.11

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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.