Home / 76,973.90-115,468.41-31,985.96

Finding the Fourth Proportional to 76,973.90, 115,468.41 and 31,985.96

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Solution

The fourth proportional to 76,973.90, 115,468.41 and 31,985.96 is: 47,982.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,973.90 : 115,468.41 = 31,985.96 : x
  2. Step 2: Convert to fraction form
    76,973.90/115,468.41 = 31,985.96/x
  3. Step 3: Cross multiply
    76,973.90x = 115,468.41 × 31,985.96
  4. Step 4: Simplify right side
    76,973.90x = 3,693,367,943.52
  5. Step 5: Solve for x
    x = 3,693,367,943.52/76,973.90
  6. Step 6: Final answer
    x = 47,982.08

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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.