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Finding the Fourth Proportional to 91,886.52, 126,802.90 and 51,603.81

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Solution

The fourth proportional to 91,886.52, 126,802.90 and 51,603.81 is: 71,212.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,886.52 : 126,802.90 = 51,603.81 : x
  2. Step 2: Convert to fraction form
    91,886.52/126,802.90 = 51,603.81/x
  3. Step 3: Cross multiply
    91,886.52x = 126,802.90 × 51,603.81
  4. Step 4: Simplify right side
    91,886.52x = 6,543,512,759.05
  5. Step 5: Solve for x
    x = 6,543,512,759.05/91,886.52
  6. Step 6: Final answer
    x = 71,212.98

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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.