Home / 78,052.34-117,078.52-18,888.02

Finding the Fourth Proportional to 78,052.34, 117,078.52 and 18,888.02

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Solution

The fourth proportional to 78,052.34, 117,078.52 and 18,888.02 is: 28,332.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,052.34 : 117,078.52 = 18,888.02 : x
  2. Step 2: Convert to fraction form
    78,052.34/117,078.52 = 18,888.02/x
  3. Step 3: Cross multiply
    78,052.34x = 117,078.52 × 18,888.02
  4. Step 4: Simplify right side
    78,052.34x = 2,211,381,427.33
  5. Step 5: Solve for x
    x = 2,211,381,427.33/78,052.34
  6. Step 6: Final answer
    x = 28,332.03

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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.