Home / 51,001.28-70,381.12-28,645.28

Finding the Fourth Proportional to 51,001.28, 70,381.12 and 28,645.28

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Solution

The fourth proportional to 51,001.28, 70,381.12 and 28,645.28 is: 39,530.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,001.28 : 70,381.12 = 28,645.28 : x
  2. Step 2: Convert to fraction form
    51,001.28/70,381.12 = 28,645.28/x
  3. Step 3: Cross multiply
    51,001.28x = 70,381.12 × 28,645.28
  4. Step 4: Simplify right side
    51,001.28x = 2,016,086,889.11
  5. Step 5: Solve for x
    x = 2,016,086,889.11/51,001.28
  6. Step 6: Final answer
    x = 39,530.12

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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.