Home / 76,910.10-106,135.76-42,916.50

Finding the Fourth Proportional to 76,910.10, 106,135.76 and 42,916.50

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Solution

The fourth proportional to 76,910.10, 106,135.76 and 42,916.50 is: 59,224.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,910.10 : 106,135.76 = 42,916.50 : x
  2. Step 2: Convert to fraction form
    76,910.10/106,135.76 = 42,916.50/x
  3. Step 3: Cross multiply
    76,910.10x = 106,135.76 × 42,916.50
  4. Step 4: Simplify right side
    76,910.10x = 4,554,975,344.04
  5. Step 5: Solve for x
    x = 4,554,975,344.04/76,910.10
  6. Step 6: Final answer
    x = 59,224.67

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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.