Home / 85,045.53-127,568.20-28,891.47

Finding the Fourth Proportional to 85,045.53, 127,568.20 and 28,891.47

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Solution

The fourth proportional to 85,045.53, 127,568.20 and 28,891.47 is: 43,337.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,045.53 : 127,568.20 = 28,891.47 : x
  2. Step 2: Convert to fraction form
    85,045.53/127,568.20 = 28,891.47/x
  3. Step 3: Cross multiply
    85,045.53x = 127,568.20 × 28,891.47
  4. Step 4: Simplify right side
    85,045.53x = 3,685,632,823.25
  5. Step 5: Solve for x
    x = 3,685,632,823.25/85,045.53
  6. Step 6: Final answer
    x = 43,337.17

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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.