Home / 80,931.85-121,432.80-43,448.19

Finding the Fourth Proportional to 80,931.85, 121,432.80 and 43,448.19

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Solution

The fourth proportional to 80,931.85, 121,432.80 and 43,448.19 is: 65,191.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,931.85 : 121,432.80 = 43,448.19 : x
  2. Step 2: Convert to fraction form
    80,931.85/121,432.80 = 43,448.19/x
  3. Step 3: Cross multiply
    80,931.85x = 121,432.80 × 43,448.19
  4. Step 4: Simplify right side
    80,931.85x = 5,276,035,366.63
  5. Step 5: Solve for x
    x = 5,276,035,366.63/80,931.85
  6. Step 6: Final answer
    x = 65,191.09

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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.