Home / 85,142.91-127,721.04-25,979.10

Finding the Fourth Proportional to 85,142.91, 127,721.04 and 25,979.10

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Solution

The fourth proportional to 85,142.91, 127,721.04 and 25,979.10 is: 38,970.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,142.91 : 127,721.04 = 25,979.10 : x
  2. Step 2: Convert to fraction form
    85,142.91/127,721.04 = 25,979.10/x
  3. Step 3: Cross multiply
    85,142.91x = 127,721.04 × 25,979.10
  4. Step 4: Simplify right side
    85,142.91x = 3,318,077,670.26
  5. Step 5: Solve for x
    x = 3,318,077,670.26/85,142.91
  6. Step 6: Final answer
    x = 38,970.69

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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.