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Finding the Fourth Proportional to 71,199.86, 98,258.88 and 39,368.75

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Solution

The fourth proportional to 71,199.86, 98,258.88 and 39,368.75 is: 54,330.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,199.86 : 98,258.88 = 39,368.75 : x
  2. Step 2: Convert to fraction form
    71,199.86/98,258.88 = 39,368.75/x
  3. Step 3: Cross multiply
    71,199.86x = 98,258.88 × 39,368.75
  4. Step 4: Simplify right side
    71,199.86x = 3,868,329,282
  5. Step 5: Solve for x
    x = 3,868,329,282/71,199.86
  6. Step 6: Final answer
    x = 54,330.57

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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.