Home / 48,147.78-66,421.50-31,157.46

Finding the Fourth Proportional to 48,147.78, 66,421.50 and 31,157.46

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Solution

The fourth proportional to 48,147.78, 66,421.50 and 31,157.46 is: 42,982.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,147.78 : 66,421.50 = 31,157.46 : x
  2. Step 2: Convert to fraction form
    48,147.78/66,421.50 = 31,157.46/x
  3. Step 3: Cross multiply
    48,147.78x = 66,421.50 × 31,157.46
  4. Step 4: Simplify right side
    48,147.78x = 2,069,525,229.39
  5. Step 5: Solve for x
    x = 2,069,525,229.39/48,147.78
  6. Step 6: Final answer
    x = 42,982.78

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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.