Home / 85,307.11-127,979.39-26,147.23

Finding the Fourth Proportional to 85,307.11, 127,979.39 and 26,147.23

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Solution

The fourth proportional to 85,307.11, 127,979.39 and 26,147.23 is: 39,226.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,307.11 : 127,979.39 = 26,147.23 : x
  2. Step 2: Convert to fraction form
    85,307.11/127,979.39 = 26,147.23/x
  3. Step 3: Cross multiply
    85,307.11x = 127,979.39 × 26,147.23
  4. Step 4: Simplify right side
    85,307.11x = 3,346,306,545.59
  5. Step 5: Solve for x
    x = 3,346,306,545.59/85,307.11
  6. Step 6: Final answer
    x = 39,226.58

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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.