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Finding the Fourth Proportional to 57,884.42, 86,804.55 and 20,437.53

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Solution

The fourth proportional to 57,884.42, 86,804.55 and 20,437.53 is: 30,648.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,884.42 : 86,804.55 = 20,437.53 : x
  2. Step 2: Convert to fraction form
    57,884.42/86,804.55 = 20,437.53/x
  3. Step 3: Cross multiply
    57,884.42x = 86,804.55 × 20,437.53
  4. Step 4: Simplify right side
    57,884.42x = 1,774,070,594.76
  5. Step 5: Solve for x
    x = 1,774,070,594.76/57,884.42
  6. Step 6: Final answer
    x = 30,648.50

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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.