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Finding the Fourth Proportional to 71,600.40, 98,804.34 and 39,767.40

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Solution

The fourth proportional to 71,600.40, 98,804.34 and 39,767.40 is: 54,876.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,600.40 : 98,804.34 = 39,767.40 : x
  2. Step 2: Convert to fraction form
    71,600.40/98,804.34 = 39,767.40/x
  3. Step 3: Cross multiply
    71,600.40x = 98,804.34 × 39,767.40
  4. Step 4: Simplify right side
    71,600.40x = 3,929,191,710.52
  5. Step 5: Solve for x
    x = 3,929,191,710.52/71,600.40
  6. Step 6: Final answer
    x = 54,876.67

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1.5x scale

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.