Home / 90,345.14-124,606.02-61,687.82

Finding the Fourth Proportional to 90,345.14, 124,606.02 and 61,687.82

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Solution

The fourth proportional to 90,345.14, 124,606.02 and 61,687.82 is: 85,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,345.14 : 124,606.02 = 61,687.82 : x
  2. Step 2: Convert to fraction form
    90,345.14/124,606.02 = 61,687.82/x
  3. Step 3: Cross multiply
    90,345.14x = 124,606.02 × 61,687.82
  4. Step 4: Simplify right side
    90,345.14x = 7,686,673,732.68
  5. Step 5: Solve for x
    x = 7,686,673,732.68/90,345.14
  6. Step 6: Final answer
    x = 85,081.21

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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.