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Finding the Fourth Proportional to 86,707.35, 130,059.18 and 39,960.27

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Solution

The fourth proportional to 86,707.35, 130,059.18 and 39,960.27 is: 59,939.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,707.35 : 130,059.18 = 39,960.27 : x
  2. Step 2: Convert to fraction form
    86,707.35/130,059.18 = 39,960.27/x
  3. Step 3: Cross multiply
    86,707.35x = 130,059.18 × 39,960.27
  4. Step 4: Simplify right side
    86,707.35x = 5,197,199,948.78
  5. Step 5: Solve for x
    x = 5,197,199,948.78/86,707.35
  6. Step 6: Final answer
    x = 59,939.55

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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.