Home / 80,748.36-121,113.36-21,589.20

Finding the Fourth Proportional to 80,748.36, 121,113.36 and 21,589.20

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Solution

The fourth proportional to 80,748.36, 121,113.36 and 21,589.20 is: 32,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,748.36 : 121,113.36 = 21,589.20 : x
  2. Step 2: Convert to fraction form
    80,748.36/121,113.36 = 21,589.20/x
  3. Step 3: Cross multiply
    80,748.36x = 121,113.36 × 21,589.20
  4. Step 4: Simplify right side
    80,748.36x = 2,614,740,551.71
  5. Step 5: Solve for x
    x = 2,614,740,551.71/80,748.36
  6. Step 6: Final answer
    x = 32,381.35

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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.