Home / 72,115.27-99,520.65-40,284.23

Finding the Fourth Proportional to 72,115.27, 99,520.65 and 40,284.23

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Solution

The fourth proportional to 72,115.27, 99,520.65 and 40,284.23 is: 55,593.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.27 : 99,520.65 = 40,284.23 : x
  2. Step 2: Convert to fraction form
    72,115.27/99,520.65 = 40,284.23/x
  3. Step 3: Cross multiply
    72,115.27x = 99,520.65 × 40,284.23
  4. Step 4: Simplify right side
    72,115.27x = 4,009,112,256.75
  5. Step 5: Solve for x
    x = 4,009,112,256.75/72,115.27
  6. Step 6: Final answer
    x = 55,593.11

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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.