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Finding the Fourth Proportional to 40,322.40, 60,368.40 and 39,170.40

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Solution

The fourth proportional to 40,322.40, 60,368.40 and 39,170.40 is: 58,643.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,322.40 : 60,368.40 = 39,170.40 : x
  2. Step 2: Convert to fraction form
    40,322.40/60,368.40 = 39,170.40/x
  3. Step 3: Cross multiply
    40,322.40x = 60,368.40 × 39,170.40
  4. Step 4: Simplify right side
    40,322.40x = 2,364,654,375.36
  5. Step 5: Solve for x
    x = 2,364,654,375.36/40,322.40
  6. Step 6: Final answer
    x = 58,643.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.