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Finding the Fourth Proportional to 71,244.90, 98,317.53 and 39,413.12

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Solution

The fourth proportional to 71,244.90, 98,317.53 and 39,413.12 is: 54,389.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,244.90 : 98,317.53 = 39,413.12 : x
  2. Step 2: Convert to fraction form
    71,244.90/98,317.53 = 39,413.12/x
  3. Step 3: Cross multiply
    71,244.90x = 98,317.53 × 39,413.12
  4. Step 4: Simplify right side
    71,244.90x = 3,875,000,116.41
  5. Step 5: Solve for x
    x = 3,875,000,116.41/71,244.90
  6. Step 6: Final answer
    x = 54,389.86

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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.