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Finding the Fourth Proportional to 88,436.80, 132,477.18 and 40,985.20

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Solution

The fourth proportional to 88,436.80, 132,477.18 and 40,985.20 is: 61,395.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,436.80 : 132,477.18 = 40,985.20 : x
  2. Step 2: Convert to fraction form
    88,436.80/132,477.18 = 40,985.20/x
  3. Step 3: Cross multiply
    88,436.80x = 132,477.18 × 40,985.20
  4. Step 4: Simplify right side
    88,436.80x = 5,429,603,717.74
  5. Step 5: Solve for x
    x = 5,429,603,717.74/88,436.80
  6. Step 6: Final answer
    x = 61,395.30

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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.