Home / 78,225.16-117,337.38-19,060.60

Finding the Fourth Proportional to 78,225.16, 117,337.38 and 19,060.60

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Solution

The fourth proportional to 78,225.16, 117,337.38 and 19,060.60 is: 28,590.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,225.16 : 117,337.38 = 19,060.60 : x
  2. Step 2: Convert to fraction form
    78,225.16/117,337.38 = 19,060.60/x
  3. Step 3: Cross multiply
    78,225.16x = 117,337.38 × 19,060.60
  4. Step 4: Simplify right side
    78,225.16x = 2,236,520,865.23
  5. Step 5: Solve for x
    x = 2,236,520,865.23/78,225.16
  6. Step 6: Final answer
    x = 28,590.81

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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.