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Finding the Fourth Proportional to 64,643.25, 89,263.79 and 47,676.92

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Solution

The fourth proportional to 64,643.25, 89,263.79 and 47,676.92 is: 65,835.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,643.25 : 89,263.79 = 47,676.92 : x
  2. Step 2: Convert to fraction form
    64,643.25/89,263.79 = 47,676.92/x
  3. Step 3: Cross multiply
    64,643.25x = 89,263.79 × 47,676.92
  4. Step 4: Simplify right side
    64,643.25x = 4,255,822,574.73
  5. Step 5: Solve for x
    x = 4,255,822,574.73/64,643.25
  6. Step 6: Final answer
    x = 65,835.53

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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.