Home / 80,659.04-120,444.88-65,897.12

Finding the Fourth Proportional to 80,659.04, 120,444.88 and 65,897.12

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Solution

The fourth proportional to 80,659.04, 120,444.88 and 65,897.12 is: 98,401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,659.04 : 120,444.88 = 65,897.12 : x
  2. Step 2: Convert to fraction form
    80,659.04/120,444.88 = 65,897.12/x
  3. Step 3: Cross multiply
    80,659.04x = 120,444.88 × 65,897.12
  4. Step 4: Simplify right side
    80,659.04x = 7,936,970,710.75
  5. Step 5: Solve for x
    x = 7,936,970,710.75/80,659.04
  6. Step 6: Final answer
    x = 98,401.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.