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Finding the Fourth Proportional to 71,188.48, 98,234.40 and 40,972.24

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Solution

The fourth proportional to 71,188.48, 98,234.40 and 40,972.24 is: 56,538.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188.48 : 98,234.40 = 40,972.24 : x
  2. Step 2: Convert to fraction form
    71,188.48/98,234.40 = 40,972.24/x
  3. Step 3: Cross multiply
    71,188.48x = 98,234.40 × 40,972.24
  4. Step 4: Simplify right side
    71,188.48x = 4,024,883,413.06
  5. Step 5: Solve for x
    x = 4,024,883,413.06/71,188.48
  6. Step 6: Final answer
    x = 56,538.41

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1.5x scale

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.