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Finding the Fourth Proportional to 64,655.56, 89,221.80 and 35,976.70

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Solution

The fourth proportional to 64,655.56, 89,221.80 and 35,976.70 is: 49,646.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,655.56 : 89,221.80 = 35,976.70 : x
  2. Step 2: Convert to fraction form
    64,655.56/89,221.80 = 35,976.70/x
  3. Step 3: Cross multiply
    64,655.56x = 89,221.80 × 35,976.70
  4. Step 4: Simplify right side
    64,655.56x = 3,209,905,932.06
  5. Step 5: Solve for x
    x = 3,209,905,932.06/64,655.56
  6. Step 6: Final answer
    x = 49,646.25

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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.