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Finding the Fourth Proportional to 64,508.90, 89,017.19 and 35,825.81

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Solution

The fourth proportional to 64,508.90, 89,017.19 and 35,825.81 is: 49,436.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,508.90 : 89,017.19 = 35,825.81 : x
  2. Step 2: Convert to fraction form
    64,508.90/89,017.19 = 35,825.81/x
  3. Step 3: Cross multiply
    64,508.90x = 89,017.19 × 35,825.81
  4. Step 4: Simplify right side
    64,508.90x = 3,189,112,311.46
  5. Step 5: Solve for x
    x = 3,189,112,311.46/64,508.90
  6. Step 6: Final answer
    x = 49,436.78

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1.5x scale

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.