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Finding the Fourth Proportional to 57,985.30, 86,977.95 and 34,657.30

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Solution

The fourth proportional to 57,985.30, 86,977.95 and 34,657.30 is: 51,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,985.30 : 86,977.95 = 34,657.30 : x
  2. Step 2: Convert to fraction form
    57,985.30/86,977.95 = 34,657.30/x
  3. Step 3: Cross multiply
    57,985.30x = 86,977.95 × 34,657.30
  4. Step 4: Simplify right side
    57,985.30x = 3,014,420,906.54
  5. Step 5: Solve for x
    x = 3,014,420,906.54/57,985.30
  6. Step 6: Final answer
    x = 51,985.95

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Similar ratio
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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.