Home / 80,478.12-111,065-44,668.14

Finding the Fourth Proportional to 80,478.12, 111,065 and 44,668.14

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Solution

The fourth proportional to 80,478.12, 111,065 and 44,668.14 is: 61,644.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,478.12 : 111,065 = 44,668.14 : x
  2. Step 2: Convert to fraction form
    80,478.12/111,065 = 44,668.14/x
  3. Step 3: Cross multiply
    80,478.12x = 111,065 × 44,668.14
  4. Step 4: Simplify right side
    80,478.12x = 4,961,066,969.10
  5. Step 5: Solve for x
    x = 4,961,066,969.10/80,478.12
  6. Step 6: Final answer
    x = 61,644.92

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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.