Home / 51,106.81-70,528.07-28,139.30

Finding the Fourth Proportional to 51,106.81, 70,528.07 and 28,139.30

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Solution

The fourth proportional to 51,106.81, 70,528.07 and 28,139.30 is: 38,832.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,106.81 : 70,528.07 = 28,139.30 : x
  2. Step 2: Convert to fraction form
    51,106.81/70,528.07 = 28,139.30/x
  3. Step 3: Cross multiply
    51,106.81x = 70,528.07 × 28,139.30
  4. Step 4: Simplify right side
    51,106.81x = 1,984,610,833.16
  5. Step 5: Solve for x
    x = 1,984,610,833.16/51,106.81
  6. Step 6: Final answer
    x = 38,832.61

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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.