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Finding the Fourth Proportional to 57,637.88, 79,605.88 and 38,742.20

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Solution

The fourth proportional to 57,637.88, 79,605.88 and 38,742.20 is: 53,508.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,637.88 : 79,605.88 = 38,742.20 : x
  2. Step 2: Convert to fraction form
    57,637.88/79,605.88 = 38,742.20/x
  3. Step 3: Cross multiply
    57,637.88x = 79,605.88 × 38,742.20
  4. Step 4: Simplify right side
    57,637.88x = 3,084,106,429.25
  5. Step 5: Solve for x
    x = 3,084,106,429.25/57,637.88
  6. Step 6: Final answer
    x = 53,508.33

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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.