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Finding the Fourth Proportional to 76,925.78, 106,157.52 and 43,391.78

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Solution

The fourth proportional to 76,925.78, 106,157.52 and 43,391.78 is: 59,880.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,925.78 : 106,157.52 = 43,391.78 : x
  2. Step 2: Convert to fraction form
    76,925.78/106,157.52 = 43,391.78/x
  3. Step 3: Cross multiply
    76,925.78x = 106,157.52 × 43,391.78
  4. Step 4: Simplify right side
    76,925.78x = 4,606,363,753.19
  5. Step 5: Solve for x
    x = 4,606,363,753.19/76,925.78
  6. Step 6: Final answer
    x = 59,880.62

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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.