Home / 85,115.04-127,617.72-40,740.72

Finding the Fourth Proportional to 85,115.04, 127,617.72 and 40,740.72

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Solution

The fourth proportional to 85,115.04, 127,617.72 and 40,740.72 is: 61,084.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,115.04 : 127,617.72 = 40,740.72 : x
  2. Step 2: Convert to fraction form
    85,115.04/127,617.72 = 40,740.72/x
  3. Step 3: Cross multiply
    85,115.04x = 127,617.72 × 40,740.72
  4. Step 4: Simplify right side
    85,115.04x = 5,199,237,797.56
  5. Step 5: Solve for x
    x = 5,199,237,797.56/85,115.04
  6. Step 6: Final answer
    x = 61,084.83

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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.