Home / 76,734.31-115,124.25-39,320.67

Finding the Fourth Proportional to 76,734.31, 115,124.25 and 39,320.67

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Solution

The fourth proportional to 76,734.31, 115,124.25 and 39,320.67 is: 58,992.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,734.31 : 115,124.25 = 39,320.67 : x
  2. Step 2: Convert to fraction form
    76,734.31/115,124.25 = 39,320.67/x
  3. Step 3: Cross multiply
    76,734.31x = 115,124.25 × 39,320.67
  4. Step 4: Simplify right side
    76,734.31x = 4,526,762,085.17
  5. Step 5: Solve for x
    x = 4,526,762,085.17/76,734.31
  6. Step 6: Final answer
    x = 58,992.67

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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.