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Finding the Fourth Proportional to 70,778.19, 106,168.11 and 28,094.10

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Solution

The fourth proportional to 70,778.19, 106,168.11 and 28,094.10 is: 42,141.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,778.19 : 106,168.11 = 28,094.10 : x
  2. Step 2: Convert to fraction form
    70,778.19/106,168.11 = 28,094.10/x
  3. Step 3: Cross multiply
    70,778.19x = 106,168.11 × 28,094.10
  4. Step 4: Simplify right side
    70,778.19x = 2,982,697,499.15
  5. Step 5: Solve for x
    x = 2,982,697,499.15/70,778.19
  6. Step 6: Final answer
    x = 42,141.48

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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.