Home / 77,990.40-116,995.20-28,062.72

Finding the Fourth Proportional to 77,990.40, 116,995.20 and 28,062.72

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Solution

The fourth proportional to 77,990.40, 116,995.20 and 28,062.72 is: 42,097.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,990.40 : 116,995.20 = 28,062.72 : x
  2. Step 2: Convert to fraction form
    77,990.40/116,995.20 = 28,062.72/x
  3. Step 3: Cross multiply
    77,990.40x = 116,995.20 × 28,062.72
  4. Step 4: Simplify right side
    77,990.40x = 3,283,203,538.94
  5. Step 5: Solve for x
    x = 3,283,203,538.94/77,990.40
  6. Step 6: Final answer
    x = 42,097.53

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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.