Home / 97,879.32-135,071.20-57,040.85

Finding the Fourth Proportional to 97,879.32, 135,071.20 and 57,040.85

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Solution

The fourth proportional to 97,879.32, 135,071.20 and 57,040.85 is: 78,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,879.32 : 135,071.20 = 57,040.85 : x
  2. Step 2: Convert to fraction form
    97,879.32/135,071.20 = 57,040.85/x
  3. Step 3: Cross multiply
    97,879.32x = 135,071.20 × 57,040.85
  4. Step 4: Simplify right side
    97,879.32x = 7,704,575,240.56
  5. Step 5: Solve for x
    x = 7,704,575,240.56/97,879.32
  6. Step 6: Final answer
    x = 78,715.05

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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.