Home / 51,017.66-70,400.96-28,355.18

Finding the Fourth Proportional to 51,017.66, 70,400.96 and 28,355.18

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Solution

The fourth proportional to 51,017.66, 70,400.96 and 28,355.18 is: 39,128.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,017.66 : 70,400.96 = 28,355.18 : x
  2. Step 2: Convert to fraction form
    51,017.66/70,400.96 = 28,355.18/x
  3. Step 3: Cross multiply
    51,017.66x = 70,400.96 × 28,355.18
  4. Step 4: Simplify right side
    51,017.66x = 1,996,231,751.20
  5. Step 5: Solve for x
    x = 1,996,231,751.20/51,017.66
  6. Step 6: Final answer
    x = 39,128.25

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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.