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Finding the Fourth Proportional to 71,395.45, 98,573.84 and 63,817.50

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Solution

The fourth proportional to 71,395.45, 98,573.84 and 63,817.50 is: 88,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,395.45 : 98,573.84 = 63,817.50 : x
  2. Step 2: Convert to fraction form
    71,395.45/98,573.84 = 63,817.50/x
  3. Step 3: Cross multiply
    71,395.45x = 98,573.84 × 63,817.50
  4. Step 4: Simplify right side
    71,395.45x = 6,290,736,034.20
  5. Step 5: Solve for x
    x = 6,290,736,034.20/71,395.45
  6. Step 6: Final answer
    x = 88,111.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.