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Finding the Fourth Proportional to 59,006.81, 81,459.54 and 39,987.09

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Solution

The fourth proportional to 59,006.81, 81,459.54 and 39,987.09 is: 55,202.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,006.81 : 81,459.54 = 39,987.09 : x
  2. Step 2: Convert to fraction form
    59,006.81/81,459.54 = 39,987.09/x
  3. Step 3: Cross multiply
    59,006.81x = 81,459.54 × 39,987.09
  4. Step 4: Simplify right side
    59,006.81x = 3,257,329,957.34
  5. Step 5: Solve for x
    x = 3,257,329,957.34/59,006.81
  6. Step 6: Final answer
    x = 55,202.61

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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.