Home / 72,207.48-99,655.62-40,378.14

Finding the Fourth Proportional to 72,207.48, 99,655.62 and 40,378.14

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Solution

The fourth proportional to 72,207.48, 99,655.62 and 40,378.14 is: 55,727.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,207.48 : 99,655.62 = 40,378.14 : x
  2. Step 2: Convert to fraction form
    72,207.48/99,655.62 = 40,378.14/x
  3. Step 3: Cross multiply
    72,207.48x = 99,655.62 × 40,378.14
  4. Step 4: Simplify right side
    72,207.48x = 4,023,908,576.15
  5. Step 5: Solve for x
    x = 4,023,908,576.15/72,207.48
  6. Step 6: Final answer
    x = 55,727.03

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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.