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Finding the Fourth Proportional to 92,431.67, 127,555.71 and 49,990.19

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Solution

The fourth proportional to 92,431.67, 127,555.71 and 49,990.19 is: 68,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,431.67 : 127,555.71 = 49,990.19 : x
  2. Step 2: Convert to fraction form
    92,431.67/127,555.71 = 49,990.19/x
  3. Step 3: Cross multiply
    92,431.67x = 127,555.71 × 49,990.19
  4. Step 4: Simplify right side
    92,431.67x = 6,376,534,178.48
  5. Step 5: Solve for x
    x = 6,376,534,178.48/92,431.67
  6. Step 6: Final answer
    x = 68,986.47

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Double scale
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1.5x scale

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.