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Finding the Fourth Proportional to 57,042.96, 85,572.90 and 19,612.68

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Solution

The fourth proportional to 57,042.96, 85,572.90 and 19,612.68 is: 29,421.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,042.96 : 85,572.90 = 19,612.68 : x
  2. Step 2: Convert to fraction form
    57,042.96/85,572.90 = 19,612.68/x
  3. Step 3: Cross multiply
    57,042.96x = 85,572.90 × 19,612.68
  4. Step 4: Simplify right side
    57,042.96x = 1,678,313,904.37
  5. Step 5: Solve for x
    x = 1,678,313,904.37/57,042.96
  6. Step 6: Final answer
    x = 29,421.93

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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.