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Finding the Fourth Proportional to 86,048.55, 129,053.34 and 32,721.45

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Solution

The fourth proportional to 86,048.55, 129,053.34 and 32,721.45 is: 49,074.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,048.55 : 129,053.34 = 32,721.45 : x
  2. Step 2: Convert to fraction form
    86,048.55/129,053.34 = 32,721.45/x
  3. Step 3: Cross multiply
    86,048.55x = 129,053.34 × 32,721.45
  4. Step 4: Simplify right side
    86,048.55x = 4,222,812,412.14
  5. Step 5: Solve for x
    x = 4,222,812,412.14/86,048.55
  6. Step 6: Final answer
    x = 49,074.77

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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.