Home / 78,002.37-117,000.72-28,071.27

Finding the Fourth Proportional to 78,002.37, 117,000.72 and 28,071.27

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Solution

The fourth proportional to 78,002.37, 117,000.72 and 28,071.27 is: 42,105.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,002.37 : 117,000.72 = 28,071.27 : x
  2. Step 2: Convert to fraction form
    78,002.37/117,000.72 = 28,071.27/x
  3. Step 3: Cross multiply
    78,002.37x = 117,000.72 × 28,071.27
  4. Step 4: Simplify right side
    78,002.37x = 3,284,358,801.31
  5. Step 5: Solve for x
    x = 3,284,358,801.31/78,002.37
  6. Step 6: Final answer
    x = 42,105.88

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1.5x scale

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.