Home / 74,751.12-103,077.60-57,758.40

Finding the Fourth Proportional to 74,751.12, 103,077.60 and 57,758.40

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Solution

The fourth proportional to 74,751.12, 103,077.60 and 57,758.40 is: 79,645.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,751.12 : 103,077.60 = 57,758.40 : x
  2. Step 2: Convert to fraction form
    74,751.12/103,077.60 = 57,758.40/x
  3. Step 3: Cross multiply
    74,751.12x = 103,077.60 × 57,758.40
  4. Step 4: Simplify right side
    74,751.12x = 5,953,597,251.84
  5. Step 5: Solve for x
    x = 5,953,597,251.84/74,751.12
  6. Step 6: Final answer
    x = 79,645.59

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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.