Home / 71,931.72-99,265.92-40,099.95

Finding the Fourth Proportional to 71,931.72, 99,265.92 and 40,099.95

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Solution

The fourth proportional to 71,931.72, 99,265.92 and 40,099.95 is: 55,338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,931.72 : 99,265.92 = 40,099.95 : x
  2. Step 2: Convert to fraction form
    71,931.72/99,265.92 = 40,099.95/x
  3. Step 3: Cross multiply
    71,931.72x = 99,265.92 × 40,099.95
  4. Step 4: Simplify right side
    71,931.72x = 3,980,558,428.70
  5. Step 5: Solve for x
    x = 3,980,558,428.70/71,931.72
  6. Step 6: Final answer
    x = 55,338.01

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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.