Home / 51,443.16-70,992.90-28,781.40

Finding the Fourth Proportional to 51,443.16, 70,992.90 and 28,781.40

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Solution

The fourth proportional to 51,443.16, 70,992.90 and 28,781.40 is: 39,719.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,443.16 : 70,992.90 = 28,781.40 : x
  2. Step 2: Convert to fraction form
    51,443.16/70,992.90 = 28,781.40/x
  3. Step 3: Cross multiply
    51,443.16x = 70,992.90 × 28,781.40
  4. Step 4: Simplify right side
    51,443.16x = 2,043,275,052.06
  5. Step 5: Solve for x
    x = 2,043,275,052.06/51,443.16
  6. Step 6: Final answer
    x = 39,719.08

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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.