Home / 72,022.32-99,390.76-40,191.40

Finding the Fourth Proportional to 72,022.32, 99,390.76 and 40,191.40

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Solution

The fourth proportional to 72,022.32, 99,390.76 and 40,191.40 is: 55,464.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,022.32 : 99,390.76 = 40,191.40 : x
  2. Step 2: Convert to fraction form
    72,022.32/99,390.76 = 40,191.40/x
  3. Step 3: Cross multiply
    72,022.32x = 99,390.76 × 40,191.40
  4. Step 4: Simplify right side
    72,022.32x = 3,994,653,791.46
  5. Step 5: Solve for x
    x = 3,994,653,791.46/72,022.32
  6. Step 6: Final answer
    x = 55,464.11

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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.