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Finding the Fourth Proportional to 86,715.67, 130,085.91 and 26,749.21

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Solution

The fourth proportional to 86,715.67, 130,085.91 and 26,749.21 is: 40,127.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,715.67 : 130,085.91 = 26,749.21 : x
  2. Step 2: Convert to fraction form
    86,715.67/130,085.91 = 26,749.21/x
  3. Step 3: Cross multiply
    86,715.67x = 130,085.91 × 26,749.21
  4. Step 4: Simplify right side
    86,715.67x = 3,479,695,190.89
  5. Step 5: Solve for x
    x = 3,479,695,190.89/86,715.67
  6. Step 6: Final answer
    x = 40,127.64

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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.