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Finding the Fourth Proportional to 75,808.48, 104,754.72 and 72,166.72

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Solution

The fourth proportional to 75,808.48, 104,754.72 and 72,166.72 is: 99,722.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,808.48 : 104,754.72 = 72,166.72 : x
  2. Step 2: Convert to fraction form
    75,808.48/104,754.72 = 72,166.72/x
  3. Step 3: Cross multiply
    75,808.48x = 104,754.72 × 72,166.72
  4. Step 4: Simplify right side
    75,808.48x = 7,559,804,546.92
  5. Step 5: Solve for x
    x = 7,559,804,546.92/75,808.48
  6. Step 6: Final answer
    x = 99,722.41

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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.