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Finding the Fourth Proportional to 76,292.64, 105,280.92 and 42,302.52

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Solution

The fourth proportional to 76,292.64, 105,280.92 and 42,302.52 is: 58,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,292.64 : 105,280.92 = 42,302.52 : x
  2. Step 2: Convert to fraction form
    76,292.64/105,280.92 = 42,302.52/x
  3. Step 3: Cross multiply
    76,292.64x = 105,280.92 × 42,302.52
  4. Step 4: Simplify right side
    76,292.64x = 4,453,648,223.92
  5. Step 5: Solve for x
    x = 4,453,648,223.92/76,292.64
  6. Step 6: Final answer
    x = 58,375.86

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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.