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Finding the Fourth Proportional to 86,048.82, 128,984.46 and 62,297.40

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Solution

The fourth proportional to 86,048.82, 128,984.46 and 62,297.40 is: 93,381.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,048.82 : 128,984.46 = 62,297.40 : x
  2. Step 2: Convert to fraction form
    86,048.82/128,984.46 = 62,297.40/x
  3. Step 3: Cross multiply
    86,048.82x = 128,984.46 × 62,297.40
  4. Step 4: Simplify right side
    86,048.82x = 8,035,396,498.40
  5. Step 5: Solve for x
    x = 8,035,396,498.40/86,048.82
  6. Step 6: Final answer
    x = 93,381.83

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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.