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Finding the Fourth Proportional to 60,611.87, 90,817.55 and 30,988.95

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Solution

The fourth proportional to 60,611.87, 90,817.55 and 30,988.95 is: 46,432.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,611.87 : 90,817.55 = 30,988.95 : x
  2. Step 2: Convert to fraction form
    60,611.87/90,817.55 = 30,988.95/x
  3. Step 3: Cross multiply
    60,611.87x = 90,817.55 × 30,988.95
  4. Step 4: Simplify right side
    60,611.87x = 2,814,340,361.13
  5. Step 5: Solve for x
    x = 2,814,340,361.13/60,611.87
  6. Step 6: Final answer
    x = 46,432.17

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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.