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Finding the Fourth Proportional to 65,989.69, 91,140.95 and 44,732.05

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Solution

The fourth proportional to 65,989.69, 91,140.95 and 44,732.05 is: 61,781.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,989.69 : 91,140.95 = 44,732.05 : x
  2. Step 2: Convert to fraction form
    65,989.69/91,140.95 = 44,732.05/x
  3. Step 3: Cross multiply
    65,989.69x = 91,140.95 × 44,732.05
  4. Step 4: Simplify right side
    65,989.69x = 4,076,921,164.81
  5. Step 5: Solve for x
    x = 4,076,921,164.81/65,989.69
  6. Step 6: Final answer
    x = 61,781.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.