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Finding the Fourth Proportional to 57,801.60, 86,718.60 and 28,220.40

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Solution

The fourth proportional to 57,801.60, 86,718.60 and 28,220.40 is: 42,338.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,801.60 : 86,718.60 = 28,220.40 : x
  2. Step 2: Convert to fraction form
    57,801.60/86,718.60 = 28,220.40/x
  3. Step 3: Cross multiply
    57,801.60x = 86,718.60 × 28,220.40
  4. Step 4: Simplify right side
    57,801.60x = 2,447,233,579.44
  5. Step 5: Solve for x
    x = 2,447,233,579.44/57,801.60
  6. Step 6: Final answer
    x = 42,338.51

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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.