Home / 76,542.91-105,630.48-42,089.11

Finding the Fourth Proportional to 76,542.91, 105,630.48 and 42,089.11

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Solution

The fourth proportional to 76,542.91, 105,630.48 and 42,089.11 is: 58,083.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,542.91 : 105,630.48 = 42,089.11 : x
  2. Step 2: Convert to fraction form
    76,542.91/105,630.48 = 42,089.11/x
  3. Step 3: Cross multiply
    76,542.91x = 105,630.48 × 42,089.11
  4. Step 4: Simplify right side
    76,542.91x = 4,445,892,892.07
  5. Step 5: Solve for x
    x = 4,445,892,892.07/76,542.91
  6. Step 6: Final answer
    x = 58,083.67

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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.