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Finding the Fourth Proportional to 57,647.65, 79,530.80 and 34,978.32

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Solution

The fourth proportional to 57,647.65, 79,530.80 and 34,978.32 is: 48,256.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,647.65 : 79,530.80 = 34,978.32 : x
  2. Step 2: Convert to fraction form
    57,647.65/79,530.80 = 34,978.32/x
  3. Step 3: Cross multiply
    57,647.65x = 79,530.80 × 34,978.32
  4. Step 4: Simplify right side
    57,647.65x = 2,781,853,772.26
  5. Step 5: Solve for x
    x = 2,781,853,772.26/57,647.65
  6. Step 6: Final answer
    x = 48,256.15

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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.