Home / 80,757.04-111,571.11-61,703.50

Finding the Fourth Proportional to 80,757.04, 111,571.11 and 61,703.50

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Solution

The fourth proportional to 80,757.04, 111,571.11 and 61,703.50 is: 85,247.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,757.04 : 111,571.11 = 61,703.50 : x
  2. Step 2: Convert to fraction form
    80,757.04/111,571.11 = 61,703.50/x
  3. Step 3: Cross multiply
    80,757.04x = 111,571.11 × 61,703.50
  4. Step 4: Simplify right side
    80,757.04x = 6,884,327,985.89
  5. Step 5: Solve for x
    x = 6,884,327,985.89/80,757.04
  6. Step 6: Final answer
    x = 85,247.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.