Home / 72,203.81-99,645.19-40,372.02

Finding the Fourth Proportional to 72,203.81, 99,645.19 and 40,372.02

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Solution

The fourth proportional to 72,203.81, 99,645.19 and 40,372.02 is: 55,715.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,203.81 : 99,645.19 = 40,372.02 : x
  2. Step 2: Convert to fraction form
    72,203.81/99,645.19 = 40,372.02/x
  3. Step 3: Cross multiply
    72,203.81x = 99,645.19 × 40,372.02
  4. Step 4: Simplify right side
    72,203.81x = 4,022,877,502.65
  5. Step 5: Solve for x
    x = 4,022,877,502.65/72,203.81
  6. Step 6: Final answer
    x = 55,715.59

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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.