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Finding the Fourth Proportional to 81,471.96, 112,420.37 and 47,018.00

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Solution

The fourth proportional to 81,471.96, 112,420.37 and 47,018.00 is: 64,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,471.96 : 112,420.37 = 47,018.00 : x
  2. Step 2: Convert to fraction form
    81,471.96/112,420.37 = 47,018.00/x
  3. Step 3: Cross multiply
    81,471.96x = 112,420.37 × 47,018.00
  4. Step 4: Simplify right side
    81,471.96x = 5,285,781,355.26
  5. Step 5: Solve for x
    x = 5,285,781,355.26/81,471.96
  6. Step 6: Final answer
    x = 64,878.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.