Home / 74,808.61-103,239.83-42,979.57

Finding the Fourth Proportional to 74,808.61, 103,239.83 and 42,979.57

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Solution

The fourth proportional to 74,808.61, 103,239.83 and 42,979.57 is: 59,314.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,808.61 : 103,239.83 = 42,979.57 : x
  2. Step 2: Convert to fraction form
    74,808.61/103,239.83 = 42,979.57/x
  3. Step 3: Cross multiply
    74,808.61x = 103,239.83 × 42,979.57
  4. Step 4: Simplify right side
    74,808.61x = 4,437,203,500.27
  5. Step 5: Solve for x
    x = 4,437,203,500.27/74,808.61
  6. Step 6: Final answer
    x = 59,314.07

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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.