Home / 72,454.24-99,991.70-40,625.20

Finding the Fourth Proportional to 72,454.24, 99,991.70 and 40,625.20

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Solution

The fourth proportional to 72,454.24, 99,991.70 and 40,625.20 is: 56,065.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,454.24 : 99,991.70 = 40,625.20 : x
  2. Step 2: Convert to fraction form
    72,454.24/99,991.70 = 40,625.20/x
  3. Step 3: Cross multiply
    72,454.24x = 99,991.70 × 40,625.20
  4. Step 4: Simplify right side
    72,454.24x = 4,062,182,810.84
  5. Step 5: Solve for x
    x = 4,062,182,810.84/72,454.24
  6. Step 6: Final answer
    x = 56,065.49

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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.