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Finding the Fourth Proportional to 57,647.78, 79,530.98 and 34,978.44

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Solution

The fourth proportional to 57,647.78, 79,530.98 and 34,978.44 is: 48,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,647.78 : 79,530.98 = 34,978.44 : x
  2. Step 2: Convert to fraction form
    57,647.78/79,530.98 = 34,978.44/x
  3. Step 3: Cross multiply
    57,647.78x = 79,530.98 × 34,978.44
  4. Step 4: Simplify right side
    57,647.78x = 2,781,869,437.18
  5. Step 5: Solve for x
    x = 2,781,869,437.18/57,647.78
  6. Step 6: Final answer
    x = 48,256.32

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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.