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Finding the Fourth Proportional to 63,012.31, 86,957 and 34,717.75

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Solution

The fourth proportional to 63,012.31, 86,957 and 34,717.75 is: 47,910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,012.31 : 86,957 = 34,717.75 : x
  2. Step 2: Convert to fraction form
    63,012.31/86,957 = 34,717.75/x
  3. Step 3: Cross multiply
    63,012.31x = 86,957 × 34,717.75
  4. Step 4: Simplify right side
    63,012.31x = 3,018,951,386.75
  5. Step 5: Solve for x
    x = 3,018,951,386.75/63,012.31
  6. Step 6: Final answer
    x = 47,910.50

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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.