Home / 76,966.93-115,288.35-39,412.90

Finding the Fourth Proportional to 76,966.93, 115,288.35 and 39,412.90

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Solution

The fourth proportional to 76,966.93, 115,288.35 and 39,412.90 is: 59,036.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,966.93 : 115,288.35 = 39,412.90 : x
  2. Step 2: Convert to fraction form
    76,966.93/115,288.35 = 39,412.90/x
  3. Step 3: Cross multiply
    76,966.93x = 115,288.35 × 39,412.90
  4. Step 4: Simplify right side
    76,966.93x = 4,543,848,209.72
  5. Step 5: Solve for x
    x = 4,543,848,209.72/76,966.93
  6. Step 6: Final answer
    x = 59,036.37

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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.