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Finding the Fourth Proportional to 70,683.76, 106,025.56 and 18,093.16

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Solution

The fourth proportional to 70,683.76, 106,025.56 and 18,093.16 is: 27,139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,683.76 : 106,025.56 = 18,093.16 : x
  2. Step 2: Convert to fraction form
    70,683.76/106,025.56 = 18,093.16/x
  3. Step 3: Cross multiply
    70,683.76x = 106,025.56 × 18,093.16
  4. Step 4: Simplify right side
    70,683.76x = 1,918,337,421.17
  5. Step 5: Solve for x
    x = 1,918,337,421.17/70,683.76
  6. Step 6: Final answer
    x = 27,139.72

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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.