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Finding the Fourth Proportional to 86,859.40, 130,332.30 and 34,270.60

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Solution

The fourth proportional to 86,859.40, 130,332.30 and 34,270.60 is: 51,422.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,859.40 : 130,332.30 = 34,270.60 : x
  2. Step 2: Convert to fraction form
    86,859.40/130,332.30 = 34,270.60/x
  3. Step 3: Cross multiply
    86,859.40x = 130,332.30 × 34,270.60
  4. Step 4: Simplify right side
    86,859.40x = 4,466,566,120.38
  5. Step 5: Solve for x
    x = 4,466,566,120.38/86,859.40
  6. Step 6: Final answer
    x = 51,422.94

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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.