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Finding the Fourth Proportional to 91,674.72, 137,480.22 and 43,637.40

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Solution

The fourth proportional to 91,674.72, 137,480.22 and 43,637.40 is: 65,440.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,674.72 : 137,480.22 = 43,637.40 : x
  2. Step 2: Convert to fraction form
    91,674.72/137,480.22 = 43,637.40/x
  3. Step 3: Cross multiply
    91,674.72x = 137,480.22 × 43,637.40
  4. Step 4: Simplify right side
    91,674.72x = 5,999,279,352.23
  5. Step 5: Solve for x
    x = 5,999,279,352.23/91,674.72
  6. Step 6: Final answer
    x = 65,440.93

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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.