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Finding the Fourth Proportional to 75,561.92, 104,303.52 and 64,908.80

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Solution

The fourth proportional to 75,561.92, 104,303.52 and 64,908.80 is: 89,598.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,561.92 : 104,303.52 = 64,908.80 : x
  2. Step 2: Convert to fraction form
    75,561.92/104,303.52 = 64,908.80/x
  3. Step 3: Cross multiply
    75,561.92x = 104,303.52 × 64,908.80
  4. Step 4: Simplify right side
    75,561.92x = 6,770,216,318.98
  5. Step 5: Solve for x
    x = 6,770,216,318.98/75,561.92
  6. Step 6: Final answer
    x = 89,598.26

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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.