Home / 71,931.28-99,263.12-40,099.52

Finding the Fourth Proportional to 71,931.28, 99,263.12 and 40,099.52

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Solution

The fourth proportional to 71,931.28, 99,263.12 and 40,099.52 is: 55,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,931.28 : 99,263.12 = 40,099.52 : x
  2. Step 2: Convert to fraction form
    71,931.28/99,263.12 = 40,099.52/x
  3. Step 3: Cross multiply
    71,931.28x = 99,263.12 × 40,099.52
  4. Step 4: Simplify right side
    71,931.28x = 3,980,403,465.70
  5. Step 5: Solve for x
    x = 3,980,403,465.70/71,931.28
  6. Step 6: Final answer
    x = 55,336.20

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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.