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Finding the Fourth Proportional to 79,058.50, 109,126.65 and 56,767.30

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Solution

The fourth proportional to 79,058.50, 109,126.65 and 56,767.30 is: 78,357.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,058.50 : 109,126.65 = 56,767.30 : x
  2. Step 2: Convert to fraction form
    79,058.50/109,126.65 = 56,767.30/x
  3. Step 3: Cross multiply
    79,058.50x = 109,126.65 × 56,767.30
  4. Step 4: Simplify right side
    79,058.50x = 6,194,825,278.55
  5. Step 5: Solve for x
    x = 6,194,825,278.55/79,058.50
  6. Step 6: Final answer
    x = 78,357.49

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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.