Home / 72,147.25-99,561.28-40,316.41

Finding the Fourth Proportional to 72,147.25, 99,561.28 and 40,316.41

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Solution

The fourth proportional to 72,147.25, 99,561.28 and 40,316.41 is: 55,635.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,147.25 : 99,561.28 = 40,316.41 : x
  2. Step 2: Convert to fraction form
    72,147.25/99,561.28 = 40,316.41/x
  3. Step 3: Cross multiply
    72,147.25x = 99,561.28 × 40,316.41
  4. Step 4: Simplify right side
    72,147.25x = 4,013,953,384.60
  5. Step 5: Solve for x
    x = 4,013,953,384.60/72,147.25
  6. Step 6: Final answer
    x = 55,635.57

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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.