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Finding the Fourth Proportional to 88,130.72, 121,620.72 and 47,844.56

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Solution

The fourth proportional to 88,130.72, 121,620.72 and 47,844.56 is: 66,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,130.72 : 121,620.72 = 47,844.56 : x
  2. Step 2: Convert to fraction form
    88,130.72/121,620.72 = 47,844.56/x
  3. Step 3: Cross multiply
    88,130.72x = 121,620.72 × 47,844.56
  4. Step 4: Simplify right side
    88,130.72x = 5,818,889,835.28
  5. Step 5: Solve for x
    x = 5,818,889,835.28/88,130.72
  6. Step 6: Final answer
    x = 66,025.67

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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.