Home / 80,578.14-111,082.36-56,630.49

Finding the Fourth Proportional to 80,578.14, 111,082.36 and 56,630.49

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Solution

The fourth proportional to 80,578.14, 111,082.36 and 56,630.49 is: 78,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,578.14 : 111,082.36 = 56,630.49 : x
  2. Step 2: Convert to fraction form
    80,578.14/111,082.36 = 56,630.49/x
  3. Step 3: Cross multiply
    80,578.14x = 111,082.36 × 56,630.49
  4. Step 4: Simplify right side
    80,578.14x = 6,290,648,809.32
  5. Step 5: Solve for x
    x = 6,290,648,809.32/80,578.14
  6. Step 6: Final answer
    x = 78,068.92

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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.