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Finding the Fourth Proportional to 81,554.67, 112,545.63 and 47,586.51

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Solution

The fourth proportional to 81,554.67, 112,545.63 and 47,586.51 is: 65,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,554.67 : 112,545.63 = 47,586.51 : x
  2. Step 2: Convert to fraction form
    81,554.67/112,545.63 = 47,586.51/x
  3. Step 3: Cross multiply
    81,554.67x = 112,545.63 × 47,586.51
  4. Step 4: Simplify right side
    81,554.67x = 5,355,653,747.45
  5. Step 5: Solve for x
    x = 5,355,653,747.45/81,554.67
  6. Step 6: Final answer
    x = 65,669.49

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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.