Home / 72,478.28-100,016.64-40,650.14

Finding the Fourth Proportional to 72,478.28, 100,016.64 and 40,650.14

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Solution

The fourth proportional to 72,478.28, 100,016.64 and 40,650.14 is: 56,095.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,478.28 : 100,016.64 = 40,650.14 : x
  2. Step 2: Convert to fraction form
    72,478.28/100,016.64 = 40,650.14/x
  3. Step 3: Cross multiply
    72,478.28x = 100,016.64 × 40,650.14
  4. Step 4: Simplify right side
    72,478.28x = 4,065,690,668.37
  5. Step 5: Solve for x
    x = 4,065,690,668.37/72,478.28
  6. Step 6: Final answer
    x = 56,095.30

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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.