Home / 79,115.57-109,178.63-45,123.18

Finding the Fourth Proportional to 79,115.57, 109,178.63 and 45,123.18

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Solution

The fourth proportional to 79,115.57, 109,178.63 and 45,123.18 is: 62,269.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,115.57 : 109,178.63 = 45,123.18 : x
  2. Step 2: Convert to fraction form
    79,115.57/109,178.63 = 45,123.18/x
  3. Step 3: Cross multiply
    79,115.57x = 109,178.63 × 45,123.18
  4. Step 4: Simplify right side
    79,115.57x = 4,926,486,973.64
  5. Step 5: Solve for x
    x = 4,926,486,973.64/79,115.57
  6. Step 6: Final answer
    x = 62,269.50

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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.