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Finding the Fourth Proportional to 71,356.95, 98,272.85 and 69,807.22

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Solution

The fourth proportional to 71,356.95, 98,272.85 and 69,807.22 is: 96,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,356.95 : 98,272.85 = 69,807.22 : x
  2. Step 2: Convert to fraction form
    71,356.95/98,272.85 = 69,807.22/x
  3. Step 3: Cross multiply
    71,356.95x = 98,272.85 × 69,807.22
  4. Step 4: Simplify right side
    71,356.95x = 6,860,153,865.26
  5. Step 5: Solve for x
    x = 6,860,153,865.26/71,356.95
  6. Step 6: Final answer
    x = 96,138.55

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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.