Home / 77,091.48-115,428.42-40,077.72

Finding the Fourth Proportional to 77,091.48, 115,428.42 and 40,077.72

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Solution

The fourth proportional to 77,091.48, 115,428.42 and 40,077.72 is: 60,008.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,091.48 : 115,428.42 = 40,077.72 : x
  2. Step 2: Convert to fraction form
    77,091.48/115,428.42 = 40,077.72/x
  3. Step 3: Cross multiply
    77,091.48x = 115,428.42 × 40,077.72
  4. Step 4: Simplify right side
    77,091.48x = 4,626,107,896.80
  5. Step 5: Solve for x
    x = 4,626,107,896.80/77,091.48
  6. Step 6: Final answer
    x = 60,008.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.