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Finding the Fourth Proportional to 71,627.60, 107,441.40 and 21,705.20

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Solution

The fourth proportional to 71,627.60, 107,441.40 and 21,705.20 is: 32,557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,627.60 : 107,441.40 = 21,705.20 : x
  2. Step 2: Convert to fraction form
    71,627.60/107,441.40 = 21,705.20/x
  3. Step 3: Cross multiply
    71,627.60x = 107,441.40 × 21,705.20
  4. Step 4: Simplify right side
    71,627.60x = 2,332,037,075.28
  5. Step 5: Solve for x
    x = 2,332,037,075.28/71,627.60
  6. Step 6: Final answer
    x = 32,557.80

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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.