Home / 74,804.06-103,235.76-42,548.78

Finding the Fourth Proportional to 74,804.06, 103,235.76 and 42,548.78

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Solution

The fourth proportional to 74,804.06, 103,235.76 and 42,548.78 is: 58,720.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,804.06 : 103,235.76 = 42,548.78 : x
  2. Step 2: Convert to fraction form
    74,804.06/103,235.76 = 42,548.78/x
  3. Step 3: Cross multiply
    74,804.06x = 103,235.76 × 42,548.78
  4. Step 4: Simplify right side
    74,804.06x = 4,392,555,124.19
  5. Step 5: Solve for x
    x = 4,392,555,124.19/74,804.06
  6. Step 6: Final answer
    x = 58,720.82

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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.