Home / 75,688.32-113,522.40-20,288.64

Finding the Fourth Proportional to 75,688.32, 113,522.40 and 20,288.64

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Solution

The fourth proportional to 75,688.32, 113,522.40 and 20,288.64 is: 30,430.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,688.32 : 113,522.40 = 20,288.64 : x
  2. Step 2: Convert to fraction form
    75,688.32/113,522.40 = 20,288.64/x
  3. Step 3: Cross multiply
    75,688.32x = 113,522.40 × 20,288.64
  4. Step 4: Simplify right side
    75,688.32x = 2,303,215,105.54
  5. Step 5: Solve for x
    x = 2,303,215,105.54/75,688.32
  6. Step 6: Final answer
    x = 30,430.26

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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.