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Finding the Fourth Proportional to 51,258.68, 70,739.03 and 28,599.65

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Solution

The fourth proportional to 51,258.68, 70,739.03 and 28,599.65 is: 39,468.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,258.68 : 70,739.03 = 28,599.65 : x
  2. Step 2: Convert to fraction form
    51,258.68/70,739.03 = 28,599.65/x
  3. Step 3: Cross multiply
    51,258.68x = 70,739.03 × 28,599.65
  4. Step 4: Simplify right side
    51,258.68x = 2,023,111,850.43
  5. Step 5: Solve for x
    x = 2,023,111,850.43/51,258.68
  6. Step 6: Final answer
    x = 39,468.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.