Home / 81,501.69-122,242.14-31,547.61

Finding the Fourth Proportional to 81,501.69, 122,242.14 and 31,547.61

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Solution

The fourth proportional to 81,501.69, 122,242.14 and 31,547.61 is: 47,317.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,501.69 : 122,242.14 = 31,547.61 : x
  2. Step 2: Convert to fraction form
    81,501.69/122,242.14 = 31,547.61/x
  3. Step 3: Cross multiply
    81,501.69x = 122,242.14 × 31,547.61
  4. Step 4: Simplify right side
    81,501.69x = 3,856,447,358.29
  5. Step 5: Solve for x
    x = 3,856,447,358.29/81,501.69
  6. Step 6: Final answer
    x = 47,317.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.