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Finding the Fourth Proportional to 60,543.17, 90,829.34 and 18,990.17

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Solution

The fourth proportional to 60,543.17, 90,829.34 and 18,990.17 is: 28,489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,543.17 : 90,829.34 = 18,990.17 : x
  2. Step 2: Convert to fraction form
    60,543.17/90,829.34 = 18,990.17/x
  3. Step 3: Cross multiply
    60,543.17x = 90,829.34 × 18,990.17
  4. Step 4: Simplify right side
    60,543.17x = 1,724,864,607.59
  5. Step 5: Solve for x
    x = 1,724,864,607.59/60,543.17
  6. Step 6: Final answer
    x = 28,489.83

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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.