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Finding the Fourth Proportional to 103,652.61, 155,478.39 and 40,479.15

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Solution

The fourth proportional to 103,652.61, 155,478.39 and 40,479.15 is: 60,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,652.61 : 155,478.39 = 40,479.15 : x
  2. Step 2: Convert to fraction form
    103,652.61/155,478.39 = 40,479.15/x
  3. Step 3: Cross multiply
    103,652.61x = 155,478.39 × 40,479.15
  4. Step 4: Simplify right side
    103,652.61x = 6,293,632,479.48
  5. Step 5: Solve for x
    x = 6,293,632,479.48/103,652.61
  6. Step 6: Final answer
    x = 60,718.51

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1.5x scale

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.