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Finding the Fourth Proportional to 57,463.78, 79,349.88 and 42,382.60

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Solution

The fourth proportional to 57,463.78, 79,349.88 and 42,382.60 is: 58,524.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,463.78 : 79,349.88 = 42,382.60 : x
  2. Step 2: Convert to fraction form
    57,463.78/79,349.88 = 42,382.60/x
  3. Step 3: Cross multiply
    57,463.78x = 79,349.88 × 42,382.60
  4. Step 4: Simplify right side
    57,463.78x = 3,363,054,224.09
  5. Step 5: Solve for x
    x = 3,363,054,224.09/57,463.78
  6. Step 6: Final answer
    x = 58,524.77

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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.