Home / 72,017.19-99,373.77-40,179.90

Finding the Fourth Proportional to 72,017.19, 99,373.77 and 40,179.90

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Solution

The fourth proportional to 72,017.19, 99,373.77 and 40,179.90 is: 55,442.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,017.19 : 99,373.77 = 40,179.90 : x
  2. Step 2: Convert to fraction form
    72,017.19/99,373.77 = 40,179.90/x
  3. Step 3: Cross multiply
    72,017.19x = 99,373.77 × 40,179.90
  4. Step 4: Simplify right side
    72,017.19x = 3,992,828,141.22
  5. Step 5: Solve for x
    x = 3,992,828,141.22/72,017.19
  6. Step 6: Final answer
    x = 55,442.71

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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.