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Finding the Fourth Proportional to 51,412.46, 70,948.70 and 28,751.19

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Solution

The fourth proportional to 51,412.46, 70,948.70 and 28,751.19 is: 39,676.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,412.46 : 70,948.70 = 28,751.19 : x
  2. Step 2: Convert to fraction form
    51,412.46/70,948.70 = 28,751.19/x
  3. Step 3: Cross multiply
    51,412.46x = 70,948.70 × 28,751.19
  4. Step 4: Simplify right side
    51,412.46x = 2,039,859,410.20
  5. Step 5: Solve for x
    x = 2,039,859,410.20/51,412.46
  6. Step 6: Final answer
    x = 39,676.37

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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.