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Finding the Fourth Proportional to 48,494.31, 66,931.34 and 30,353.45

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Solution

The fourth proportional to 48,494.31, 66,931.34 and 30,353.45 is: 41,893.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,494.31 : 66,931.34 = 30,353.45 : x
  2. Step 2: Convert to fraction form
    48,494.31/66,931.34 = 30,353.45/x
  3. Step 3: Cross multiply
    48,494.31x = 66,931.34 × 30,353.45
  4. Step 4: Simplify right side
    48,494.31x = 2,031,596,595.70
  5. Step 5: Solve for x
    x = 2,031,596,595.70/48,494.31
  6. Step 6: Final answer
    x = 41,893.51

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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.