Home / 72,015.17-99,381.01-40,184.08

Finding the Fourth Proportional to 72,015.17, 99,381.01 and 40,184.08

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Solution

The fourth proportional to 72,015.17, 99,381.01 and 40,184.08 is: 55,454.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,015.17 : 99,381.01 = 40,184.08 : x
  2. Step 2: Convert to fraction form
    72,015.17/99,381.01 = 40,184.08/x
  3. Step 3: Cross multiply
    72,015.17x = 99,381.01 × 40,184.08
  4. Step 4: Simplify right side
    72,015.17x = 3,993,534,107.41
  5. Step 5: Solve for x
    x = 3,993,534,107.41/72,015.17
  6. Step 6: Final answer
    x = 55,454.07

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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.