Home / 72,145.13-108,237.66-30,045.02

Finding the Fourth Proportional to 72,145.13, 108,237.66 and 30,045.02

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Solution

The fourth proportional to 72,145.13, 108,237.66 and 30,045.02 is: 45,075.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,145.13 : 108,237.66 = 30,045.02 : x
  2. Step 2: Convert to fraction form
    72,145.13/108,237.66 = 30,045.02/x
  3. Step 3: Cross multiply
    72,145.13x = 108,237.66 × 30,045.02
  4. Step 4: Simplify right side
    72,145.13x = 3,252,002,659.45
  5. Step 5: Solve for x
    x = 3,252,002,659.45/72,145.13
  6. Step 6: Final answer
    x = 45,075.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.