Home / 57,112.59-85,678.06-19,663.45

Finding the Fourth Proportional to 57,112.59, 85,678.06 and 19,663.45

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Solution

The fourth proportional to 57,112.59, 85,678.06 and 19,663.45 is: 29,498.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,112.59 : 85,678.06 = 19,663.45 : x
  2. Step 2: Convert to fraction form
    57,112.59/85,678.06 = 19,663.45/x
  3. Step 3: Cross multiply
    57,112.59x = 85,678.06 × 19,663.45
  4. Step 4: Simplify right side
    57,112.59x = 1,684,726,199.75
  5. Step 5: Solve for x
    x = 1,684,726,199.75/57,112.59
  6. Step 6: Final answer
    x = 29,498.34

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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.