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Finding the Fourth Proportional to 73,488.40, 110,086.80 and 40,159.60

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Solution

The fourth proportional to 73,488.40, 110,086.80 and 40,159.60 is: 60,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,488.40 : 110,086.80 = 40,159.60 : x
  2. Step 2: Convert to fraction form
    73,488.40/110,086.80 = 40,159.60/x
  3. Step 3: Cross multiply
    73,488.40x = 110,086.80 × 40,159.60
  4. Step 4: Simplify right side
    73,488.40x = 4,421,041,853.28
  5. Step 5: Solve for x
    x = 4,421,041,853.28/73,488.40
  6. Step 6: Final answer
    x = 60,159.72

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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.