Home / 72,133.16-99,540.56-40,301.37

Finding the Fourth Proportional to 72,133.16, 99,540.56 and 40,301.37

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Solution

The fourth proportional to 72,133.16, 99,540.56 and 40,301.37 is: 55,614.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,133.16 : 99,540.56 = 40,301.37 : x
  2. Step 2: Convert to fraction form
    72,133.16/99,540.56 = 40,301.37/x
  3. Step 3: Cross multiply
    72,133.16x = 99,540.56 × 40,301.37
  4. Step 4: Simplify right side
    72,133.16x = 4,011,620,737.06
  5. Step 5: Solve for x
    x = 4,011,620,737.06/72,133.16
  6. Step 6: Final answer
    x = 55,614.10

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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.