Home / 72,008.01-99,371.34-40,178.25

Finding the Fourth Proportional to 72,008.01, 99,371.34 and 40,178.25

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Solution

The fourth proportional to 72,008.01, 99,371.34 and 40,178.25 is: 55,446.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,008.01 : 99,371.34 = 40,178.25 : x
  2. Step 2: Convert to fraction form
    72,008.01/99,371.34 = 40,178.25/x
  3. Step 3: Cross multiply
    72,008.01x = 99,371.34 × 40,178.25
  4. Step 4: Simplify right side
    72,008.01x = 3,992,566,541.36
  5. Step 5: Solve for x
    x = 3,992,566,541.36/72,008.01
  6. Step 6: Final answer
    x = 55,446.14

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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.