Home / 57,120.04-85,663.62-19,678.60

Finding the Fourth Proportional to 57,120.04, 85,663.62 and 19,678.60

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Solution

The fourth proportional to 57,120.04, 85,663.62 and 19,678.60 is: 29,512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,120.04 : 85,663.62 = 19,678.60 : x
  2. Step 2: Convert to fraction form
    57,120.04/85,663.62 = 19,678.60/x
  3. Step 3: Cross multiply
    57,120.04x = 85,663.62 × 19,678.60
  4. Step 4: Simplify right side
    57,120.04x = 1,685,740,112.53
  5. Step 5: Solve for x
    x = 1,685,740,112.53/57,120.04
  6. Step 6: Final answer
    x = 29,512.24

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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.