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Finding the Fourth Proportional to 76,501.67, 114,539.67 and 38,980.85

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Solution

The fourth proportional to 76,501.67, 114,539.67 and 38,980.85 is: 58,362.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,501.67 : 114,539.67 = 38,980.85 : x
  2. Step 2: Convert to fraction form
    76,501.67/114,539.67 = 38,980.85/x
  3. Step 3: Cross multiply
    76,501.67x = 114,539.67 × 38,980.85
  4. Step 4: Simplify right side
    76,501.67x = 4,464,853,122.62
  5. Step 5: Solve for x
    x = 4,464,853,122.62/76,501.67
  6. Step 6: Final answer
    x = 58,362.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.