Home / 78,050.94-117,077.10-18,886.68

Finding the Fourth Proportional to 78,050.94, 117,077.10 and 18,886.68

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Solution

The fourth proportional to 78,050.94, 117,077.10 and 18,886.68 is: 28,330.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,050.94 : 117,077.10 = 18,886.68 : x
  2. Step 2: Convert to fraction form
    78,050.94/117,077.10 = 18,886.68/x
  3. Step 3: Cross multiply
    78,050.94x = 117,077.10 × 18,886.68
  4. Step 4: Simplify right side
    78,050.94x = 2,211,197,723.03
  5. Step 5: Solve for x
    x = 2,211,197,723.03/78,050.94
  6. Step 6: Final answer
    x = 28,330.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.