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Finding the Fourth Proportional to 86,774.97, 130,013.87 and 47,359.74

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Solution

The fourth proportional to 86,774.97, 130,013.87 and 47,359.74 is: 70,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,774.97 : 130,013.87 = 47,359.74 : x
  2. Step 2: Convert to fraction form
    86,774.97/130,013.87 = 47,359.74/x
  3. Step 3: Cross multiply
    86,774.97x = 130,013.87 × 47,359.74
  4. Step 4: Simplify right side
    86,774.97x = 6,157,422,842.80
  5. Step 5: Solve for x
    x = 6,157,422,842.80/86,774.97
  6. Step 6: Final answer
    x = 70,958.51

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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.