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Finding the Fourth Proportional to 91,144.91, 125,746.43 and 57,154.82

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Solution

The fourth proportional to 91,144.91, 125,746.43 and 57,154.82 is: 78,852.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,144.91 : 125,746.43 = 57,154.82 : x
  2. Step 2: Convert to fraction form
    91,144.91/125,746.43 = 57,154.82/x
  3. Step 3: Cross multiply
    91,144.91x = 125,746.43 × 57,154.82
  4. Step 4: Simplify right side
    91,144.91x = 7,187,013,657.79
  5. Step 5: Solve for x
    x = 7,187,013,657.79/91,144.91
  6. Step 6: Final answer
    x = 78,852.60

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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.