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Finding the Fourth Proportional to 79,347.78, 109,503.36 and 47,510.60

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Solution

The fourth proportional to 79,347.78, 109,503.36 and 47,510.60 is: 65,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,347.78 : 109,503.36 = 47,510.60 : x
  2. Step 2: Convert to fraction form
    79,347.78/109,503.36 = 47,510.60/x
  3. Step 3: Cross multiply
    79,347.78x = 109,503.36 × 47,510.60
  4. Step 4: Simplify right side
    79,347.78x = 5,202,569,788.10
  5. Step 5: Solve for x
    x = 5,202,569,788.10/79,347.78
  6. Step 6: Final answer
    x = 65,566.67

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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.