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Finding the Fourth Proportional to 64,120.81, 88,486.76 and 35,826.50

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Solution

The fourth proportional to 64,120.81, 88,486.76 and 35,826.50 is: 49,440.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,120.81 : 88,486.76 = 35,826.50 : x
  2. Step 2: Convert to fraction form
    64,120.81/88,486.76 = 35,826.50/x
  3. Step 3: Cross multiply
    64,120.81x = 88,486.76 × 35,826.50
  4. Step 4: Simplify right side
    64,120.81x = 3,170,170,728.01
  5. Step 5: Solve for x
    x = 3,170,170,728.01/64,120.81
  6. Step 6: Final answer
    x = 49,440.59

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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.