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Finding the Fourth Proportional to 57,430.92, 86,094.48 and 20,486.28

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Solution

The fourth proportional to 57,430.92, 86,094.48 and 20,486.28 is: 30,710.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,430.92 : 86,094.48 = 20,486.28 : x
  2. Step 2: Convert to fraction form
    57,430.92/86,094.48 = 20,486.28/x
  3. Step 3: Cross multiply
    57,430.92x = 86,094.48 × 20,486.28
  4. Step 4: Simplify right side
    57,430.92x = 1,763,755,623.73
  5. Step 5: Solve for x
    x = 1,763,755,623.73/57,430.92
  6. Step 6: Final answer
    x = 30,710.91

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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.