Home / 86,984.55-130,278.78-51,851.61

Finding the Fourth Proportional to 86,984.55, 130,278.78 and 51,851.61

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Solution

The fourth proportional to 86,984.55, 130,278.78 and 51,851.61 is: 77,659.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,984.55 : 130,278.78 = 51,851.61 : x
  2. Step 2: Convert to fraction form
    86,984.55/130,278.78 = 51,851.61/x
  3. Step 3: Cross multiply
    86,984.55x = 130,278.78 × 51,851.61
  4. Step 4: Simplify right side
    86,984.55x = 6,755,164,491.84
  5. Step 5: Solve for x
    x = 6,755,164,491.84/86,984.55
  6. Step 6: Final answer
    x = 77,659.36

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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.