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Finding the Fourth Proportional to 51,354.66, 70,869.90 and 30,134.28

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Solution

The fourth proportional to 51,354.66, 70,869.90 and 30,134.28 is: 41,585.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,354.66 : 70,869.90 = 30,134.28 : x
  2. Step 2: Convert to fraction form
    51,354.66/70,869.90 = 30,134.28/x
  3. Step 3: Cross multiply
    51,354.66x = 70,869.90 × 30,134.28
  4. Step 4: Simplify right side
    51,354.66x = 2,135,613,410.17
  5. Step 5: Solve for x
    x = 2,135,613,410.17/51,354.66
  6. Step 6: Final answer
    x = 41,585.58

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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.