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Finding the Fourth Proportional to 128,794.76, 193,191.18 and 40,048.10

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Solution

The fourth proportional to 128,794.76, 193,191.18 and 40,048.10 is: 60,071.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,794.76 : 193,191.18 = 40,048.10 : x
  2. Step 2: Convert to fraction form
    128,794.76/193,191.18 = 40,048.10/x
  3. Step 3: Cross multiply
    128,794.76x = 193,191.18 × 40,048.10
  4. Step 4: Simplify right side
    128,794.76x = 7,736,939,695.76
  5. Step 5: Solve for x
    x = 7,736,939,695.76/128,794.76
  6. Step 6: Final answer
    x = 60,071.85

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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.