Home / 105,531.66-145,633.55-57,785.00

Finding the Fourth Proportional to 105,531.66, 145,633.55 and 57,785.00

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Solution

The fourth proportional to 105,531.66, 145,633.55 and 57,785.00 is: 79,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,531.66 : 145,633.55 = 57,785.00 : x
  2. Step 2: Convert to fraction form
    105,531.66/145,633.55 = 57,785.00/x
  3. Step 3: Cross multiply
    105,531.66x = 145,633.55 × 57,785.00
  4. Step 4: Simplify right side
    105,531.66x = 8,415,433,669.66
  5. Step 5: Solve for x
    x = 8,415,433,669.66/105,531.66
  6. Step 6: Final answer
    x = 79,743.21

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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.