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Finding the Fourth Proportional to 71,454.59, 98,611.27 and 39,622.80

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Solution

The fourth proportional to 71,454.59, 98,611.27 and 39,622.80 is: 54,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,454.59 : 98,611.27 = 39,622.80 : x
  2. Step 2: Convert to fraction form
    71,454.59/98,611.27 = 39,622.80/x
  3. Step 3: Cross multiply
    71,454.59x = 98,611.27 × 39,622.80
  4. Step 4: Simplify right side
    71,454.59x = 3,907,254,628.96
  5. Step 5: Solve for x
    x = 3,907,254,628.96/71,454.59
  6. Step 6: Final answer
    x = 54,681.65

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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.