Home / 71,842.57-99,145.81-40,011.46

Finding the Fourth Proportional to 71,842.57, 99,145.81 and 40,011.46

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Solution

The fourth proportional to 71,842.57, 99,145.81 and 40,011.46 is: 55,217.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,842.57 : 99,145.81 = 40,011.46 : x
  2. Step 2: Convert to fraction form
    71,842.57/99,145.81 = 40,011.46/x
  3. Step 3: Cross multiply
    71,842.57x = 99,145.81 × 40,011.46
  4. Step 4: Simplify right side
    71,842.57x = 3,966,968,413.13
  5. Step 5: Solve for x
    x = 3,966,968,413.13/71,842.57
  6. Step 6: Final answer
    x = 55,217.52

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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.