Home / 72,887.50-109,331.38-20,296.98

Finding the Fourth Proportional to 72,887.50, 109,331.38 and 20,296.98

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Solution

The fourth proportional to 72,887.50, 109,331.38 and 20,296.98 is: 30,445.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,887.50 : 109,331.38 = 20,296.98 : x
  2. Step 2: Convert to fraction form
    72,887.50/109,331.38 = 20,296.98/x
  3. Step 3: Cross multiply
    72,887.50x = 109,331.38 × 20,296.98
  4. Step 4: Simplify right side
    72,887.50x = 2,219,096,833.23
  5. Step 5: Solve for x
    x = 2,219,096,833.23/72,887.50
  6. Step 6: Final answer
    x = 30,445.51

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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.