Home / 81,547.55-122,352.45-31,662.66

Finding the Fourth Proportional to 81,547.55, 122,352.45 and 31,662.66

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Solution

The fourth proportional to 81,547.55, 122,352.45 and 31,662.66 is: 47,506.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,547.55 : 122,352.45 = 31,662.66 : x
  2. Step 2: Convert to fraction form
    81,547.55/122,352.45 = 31,662.66/x
  3. Step 3: Cross multiply
    81,547.55x = 122,352.45 × 31,662.66
  4. Step 4: Simplify right side
    81,547.55x = 3,874,004,024.52
  5. Step 5: Solve for x
    x = 3,874,004,024.52/81,547.55
  6. Step 6: Final answer
    x = 47,506.08

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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.