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Finding the Fourth Proportional to 86,290.84, 119,053.56 and 48,557.80

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Solution

The fourth proportional to 86,290.84, 119,053.56 and 48,557.80 is: 66,994.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,290.84 : 119,053.56 = 48,557.80 : x
  2. Step 2: Convert to fraction form
    86,290.84/119,053.56 = 48,557.80/x
  3. Step 3: Cross multiply
    86,290.84x = 119,053.56 × 48,557.80
  4. Step 4: Simplify right side
    86,290.84x = 5,780,978,955.77
  5. Step 5: Solve for x
    x = 5,780,978,955.77/86,290.84
  6. Step 6: Final answer
    x = 66,994.12

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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.