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Finding the Fourth Proportional to 88,275.53, 121,821.03 and 47,989.31

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Solution

The fourth proportional to 88,275.53, 121,821.03 and 47,989.31 is: 66,225.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,275.53 : 121,821.03 = 47,989.31 : x
  2. Step 2: Convert to fraction form
    88,275.53/121,821.03 = 47,989.31/x
  3. Step 3: Cross multiply
    88,275.53x = 121,821.03 × 47,989.31
  4. Step 4: Simplify right side
    88,275.53x = 5,846,106,564.08
  5. Step 5: Solve for x
    x = 5,846,106,564.08/88,275.53
  6. Step 6: Final answer
    x = 66,225.67

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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.