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Finding the Fourth Proportional to 76,658.28, 105,837.03 and 52,499.76

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Solution

The fourth proportional to 76,658.28, 105,837.03 and 52,499.76 is: 72,482.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,658.28 : 105,837.03 = 52,499.76 : x
  2. Step 2: Convert to fraction form
    76,658.28/105,837.03 = 52,499.76/x
  3. Step 3: Cross multiply
    76,658.28x = 105,837.03 × 52,499.76
  4. Step 4: Simplify right side
    76,658.28x = 5,556,418,674.11
  5. Step 5: Solve for x
    x = 5,556,418,674.11/76,658.28
  6. Step 6: Final answer
    x = 72,482.96

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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.