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Finding the Fourth Proportional to 57,640.56, 79,574.04 and 40,913.52

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Solution

The fourth proportional to 57,640.56, 79,574.04 and 40,913.52 is: 56,482.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,640.56 : 79,574.04 = 40,913.52 : x
  2. Step 2: Convert to fraction form
    57,640.56/79,574.04 = 40,913.52/x
  3. Step 3: Cross multiply
    57,640.56x = 79,574.04 × 40,913.52
  4. Step 4: Simplify right side
    57,640.56x = 3,255,654,077.02
  5. Step 5: Solve for x
    x = 3,255,654,077.02/57,640.56
  6. Step 6: Final answer
    x = 56,482.00

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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.