Home / 80,720.02-121,078.68-36,315.34

Finding the Fourth Proportional to 80,720.02, 121,078.68 and 36,315.34

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Solution

The fourth proportional to 80,720.02, 121,078.68 and 36,315.34 is: 54,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,720.02 : 121,078.68 = 36,315.34 : x
  2. Step 2: Convert to fraction form
    80,720.02/121,078.68 = 36,315.34/x
  3. Step 3: Cross multiply
    80,720.02x = 121,078.68 × 36,315.34
  4. Step 4: Simplify right side
    80,720.02x = 4,397,013,430.95
  5. Step 5: Solve for x
    x = 4,397,013,430.95/80,720.02
  6. Step 6: Final answer
    x = 54,472.40

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1.5x scale

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.