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Finding the Fourth Proportional to 78,370.70, 117,556.05 and 47,266.70

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Solution

The fourth proportional to 78,370.70, 117,556.05 and 47,266.70 is: 70,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,370.70 : 117,556.05 = 47,266.70 : x
  2. Step 2: Convert to fraction form
    78,370.70/117,556.05 = 47,266.70/x
  3. Step 3: Cross multiply
    78,370.70x = 117,556.05 × 47,266.70
  4. Step 4: Simplify right side
    78,370.70x = 5,556,486,548.54
  5. Step 5: Solve for x
    x = 5,556,486,548.54/78,370.70
  6. Step 6: Final answer
    x = 70,900.05

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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.