Home / 55,678.23-83,518.56-20,618.19

Finding the Fourth Proportional to 55,678.23, 83,518.56 and 20,618.19

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Solution

The fourth proportional to 55,678.23, 83,518.56 and 20,618.19 is: 30,927.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,678.23 : 83,518.56 = 20,618.19 : x
  2. Step 2: Convert to fraction form
    55,678.23/83,518.56 = 20,618.19/x
  3. Step 3: Cross multiply
    55,678.23x = 83,518.56 × 20,618.19
  4. Step 4: Simplify right side
    55,678.23x = 1,722,001,538.61
  5. Step 5: Solve for x
    x = 1,722,001,538.61/55,678.23
  6. Step 6: Final answer
    x = 30,927.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.