Home / 80,923.60-121,448.90-56,138.04

Finding the Fourth Proportional to 80,923.60, 121,448.90 and 56,138.04

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Solution

The fourth proportional to 80,923.60, 121,448.90 and 56,138.04 is: 84,251.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,923.60 : 121,448.90 = 56,138.04 : x
  2. Step 2: Convert to fraction form
    80,923.60/121,448.90 = 56,138.04/x
  3. Step 3: Cross multiply
    80,923.60x = 121,448.90 × 56,138.04
  4. Step 4: Simplify right side
    80,923.60x = 6,817,903,206.16
  5. Step 5: Solve for x
    x = 6,817,903,206.16/80,923.60
  6. Step 6: Final answer
    x = 84,251.11

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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.