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Finding the Fourth Proportional to 66,430.53, 99,650.66 and 26,988.39

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Solution

The fourth proportional to 66,430.53, 99,650.66 and 26,988.39 is: 40,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.53 : 99,650.66 = 26,988.39 : x
  2. Step 2: Convert to fraction form
    66,430.53/99,650.66 = 26,988.39/x
  3. Step 3: Cross multiply
    66,430.53x = 99,650.66 × 26,988.39
  4. Step 4: Simplify right side
    66,430.53x = 2,689,410,740.90
  5. Step 5: Solve for x
    x = 2,689,410,740.90/66,430.53
  6. Step 6: Final answer
    x = 40,484.56

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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.