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Finding the Fourth Proportional to 65,335.80, 98,012.34 and 20,947.80

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Solution

The fourth proportional to 65,335.80, 98,012.34 and 20,947.80 is: 31,424.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,335.80 : 98,012.34 = 20,947.80 : x
  2. Step 2: Convert to fraction form
    65,335.80/98,012.34 = 20,947.80/x
  3. Step 3: Cross multiply
    65,335.80x = 98,012.34 × 20,947.80
  4. Step 4: Simplify right side
    65,335.80x = 2,053,142,895.85
  5. Step 5: Solve for x
    x = 2,053,142,895.85/65,335.80
  6. Step 6: Final answer
    x = 31,424.47

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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.