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Finding the Fourth Proportional to 57,443.79, 79,249.80 and 42,372.75

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Solution

The fourth proportional to 57,443.79, 79,249.80 and 42,372.75 is: 58,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,443.79 : 79,249.80 = 42,372.75 : x
  2. Step 2: Convert to fraction form
    57,443.79/79,249.80 = 42,372.75/x
  3. Step 3: Cross multiply
    57,443.79x = 79,249.80 × 42,372.75
  4. Step 4: Simplify right side
    57,443.79x = 3,358,031,962.95
  5. Step 5: Solve for x
    x = 3,358,031,962.95/57,443.79
  6. Step 6: Final answer
    x = 58,457.70

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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.