Home / 85,306.87-127,955.67-26,142.72

Finding the Fourth Proportional to 85,306.87, 127,955.67 and 26,142.72

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Solution

The fourth proportional to 85,306.87, 127,955.67 and 26,142.72 is: 39,212.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,306.87 : 127,955.67 = 26,142.72 : x
  2. Step 2: Convert to fraction form
    85,306.87/127,955.67 = 26,142.72/x
  3. Step 3: Cross multiply
    85,306.87x = 127,955.67 × 26,142.72
  4. Step 4: Simplify right side
    85,306.87x = 3,345,109,253.22
  5. Step 5: Solve for x
    x = 3,345,109,253.22/85,306.87
  6. Step 6: Final answer
    x = 39,212.66

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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.