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Finding the Fourth Proportional to 74,498.70, 102,808.18 and 40,964.70

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Solution

The fourth proportional to 74,498.70, 102,808.18 and 40,964.70 is: 56,531.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,498.70 : 102,808.18 = 40,964.70 : x
  2. Step 2: Convert to fraction form
    74,498.70/102,808.18 = 40,964.70/x
  3. Step 3: Cross multiply
    74,498.70x = 102,808.18 × 40,964.70
  4. Step 4: Simplify right side
    74,498.70x = 4,211,506,251.25
  5. Step 5: Solve for x
    x = 4,211,506,251.25/74,498.70
  6. Step 6: Final answer
    x = 56,531.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.