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Finding the Fourth Proportional to 66,430.41, 99,693 and 36,871.89

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Solution

The fourth proportional to 66,430.41, 99,693 and 36,871.89 is: 55,334.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.41 : 99,693 = 36,871.89 : x
  2. Step 2: Convert to fraction form
    66,430.41/99,693 = 36,871.89/x
  3. Step 3: Cross multiply
    66,430.41x = 99,693 × 36,871.89
  4. Step 4: Simplify right side
    66,430.41x = 3,675,869,329.77
  5. Step 5: Solve for x
    x = 3,675,869,329.77/66,430.41
  6. Step 6: Final answer
    x = 55,334.14

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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.