Home / 72,000.15-99,358.29-40,168.23

Finding the Fourth Proportional to 72,000.15, 99,358.29 and 40,168.23

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Solution

The fourth proportional to 72,000.15, 99,358.29 and 40,168.23 is: 55,431.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,000.15 : 99,358.29 = 40,168.23 : x
  2. Step 2: Convert to fraction form
    72,000.15/99,358.29 = 40,168.23/x
  3. Step 3: Cross multiply
    72,000.15x = 99,358.29 × 40,168.23
  4. Step 4: Simplify right side
    72,000.15x = 3,991,046,645.13
  5. Step 5: Solve for x
    x = 3,991,046,645.13/72,000.15
  6. Step 6: Final answer
    x = 55,431.09

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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.