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Finding the Fourth Proportional to 57,655.22, 79,527.80 and 39,719.12

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Solution

The fourth proportional to 57,655.22, 79,527.80 and 39,719.12 is: 54,787.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,655.22 : 79,527.80 = 39,719.12 : x
  2. Step 2: Convert to fraction form
    57,655.22/79,527.80 = 39,719.12/x
  3. Step 3: Cross multiply
    57,655.22x = 79,527.80 × 39,719.12
  4. Step 4: Simplify right side
    57,655.22x = 3,158,774,231.54
  5. Step 5: Solve for x
    x = 3,158,774,231.54/57,655.22
  6. Step 6: Final answer
    x = 54,787.31

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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.