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Finding the Fourth Proportional to 60,938.40, 91,373.64 and 18,806.52

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Solution

The fourth proportional to 60,938.40, 91,373.64 and 18,806.52 is: 28,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,938.40 : 91,373.64 = 18,806.52 : x
  2. Step 2: Convert to fraction form
    60,938.40/91,373.64 = 18,806.52/x
  3. Step 3: Cross multiply
    60,938.40x = 91,373.64 × 18,806.52
  4. Step 4: Simplify right side
    60,938.40x = 1,718,420,188.13
  5. Step 5: Solve for x
    x = 1,718,420,188.13/60,938.40
  6. Step 6: Final answer
    x = 28,199.30

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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.