Home / 72,147.18-99,562.95-40,316.09

Finding the Fourth Proportional to 72,147.18, 99,562.95 and 40,316.09

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Solution

The fourth proportional to 72,147.18, 99,562.95 and 40,316.09 is: 55,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,147.18 : 99,562.95 = 40,316.09 : x
  2. Step 2: Convert to fraction form
    72,147.18/99,562.95 = 40,316.09/x
  3. Step 3: Cross multiply
    72,147.18x = 99,562.95 × 40,316.09
  4. Step 4: Simplify right side
    72,147.18x = 4,013,988,355.05
  5. Step 5: Solve for x
    x = 4,013,988,355.05/72,147.18
  6. Step 6: Final answer
    x = 55,636.11

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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.