Home / 81,688.65-122,536.58-46,149.45

Finding the Fourth Proportional to 81,688.65, 122,536.58 and 46,149.45

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Solution

The fourth proportional to 81,688.65, 122,536.58 and 46,149.45 is: 69,226.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688.65 : 122,536.58 = 46,149.45 : x
  2. Step 2: Convert to fraction form
    81,688.65/122,536.58 = 46,149.45/x
  3. Step 3: Cross multiply
    81,688.65x = 122,536.58 × 46,149.45
  4. Step 4: Simplify right side
    81,688.65x = 5,654,995,541.13
  5. Step 5: Solve for x
    x = 5,654,995,541.13/81,688.65
  6. Step 6: Final answer
    x = 69,226.21

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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.