Home / 78,037.50-117,073.62-30,657.18

Finding the Fourth Proportional to 78,037.50, 117,073.62 and 30,657.18

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Solution

The fourth proportional to 78,037.50, 117,073.62 and 30,657.18 is: 45,992.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,037.50 : 117,073.62 = 30,657.18 : x
  2. Step 2: Convert to fraction form
    78,037.50/117,073.62 = 30,657.18/x
  3. Step 3: Cross multiply
    78,037.50x = 117,073.62 × 30,657.18
  4. Step 4: Simplify right side
    78,037.50x = 3,589,147,041.59
  5. Step 5: Solve for x
    x = 3,589,147,041.59/78,037.50
  6. Step 6: Final answer
    x = 45,992.59

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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.