Home / 81,258.14-121,902.47-36,888.01

Finding the Fourth Proportional to 81,258.14, 121,902.47 and 36,888.01

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Solution

The fourth proportional to 81,258.14, 121,902.47 and 36,888.01 is: 55,338.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,258.14 : 121,902.47 = 36,888.01 : x
  2. Step 2: Convert to fraction form
    81,258.14/121,902.47 = 36,888.01/x
  3. Step 3: Cross multiply
    81,258.14x = 121,902.47 × 36,888.01
  4. Step 4: Simplify right side
    81,258.14x = 4,496,739,532.38
  5. Step 5: Solve for x
    x = 4,496,739,532.38/81,258.14
  6. Step 6: Final answer
    x = 55,338.94

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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.