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Finding the Fourth Proportional to 115,482, 159,365.64 and 62,490

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Solution

The fourth proportional to 115,482, 159,365.64 and 62,490 is: 86,236.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,482 : 159,365.64 = 62,490 : x
  2. Step 2: Convert to fraction form
    115,482/159,365.64 = 62,490/x
  3. Step 3: Cross multiply
    115,482x = 159,365.64 × 62,490
  4. Step 4: Simplify right side
    115,482x = 9,958,758,843.60
  5. Step 5: Solve for x
    x = 9,958,758,843.60/115,482
  6. Step 6: Final answer
    x = 86,236.46

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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.