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Finding the Fourth Proportional to 73,977.50, 102,088.96 and 40,443.50

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Solution

The fourth proportional to 73,977.50, 102,088.96 and 40,443.50 is: 55,812.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,977.50 : 102,088.96 = 40,443.50 : x
  2. Step 2: Convert to fraction form
    73,977.50/102,088.96 = 40,443.50/x
  3. Step 3: Cross multiply
    73,977.50x = 102,088.96 × 40,443.50
  4. Step 4: Simplify right side
    73,977.50x = 4,128,834,853.76
  5. Step 5: Solve for x
    x = 4,128,834,853.76/73,977.50
  6. Step 6: Final answer
    x = 55,812.04

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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.