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Finding the Fourth Proportional to 90,886.78, 136,357.95 and 46,544.89

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Solution

The fourth proportional to 90,886.78, 136,357.95 and 46,544.89 is: 69,831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,886.78 : 136,357.95 = 46,544.89 : x
  2. Step 2: Convert to fraction form
    90,886.78/136,357.95 = 46,544.89/x
  3. Step 3: Cross multiply
    90,886.78x = 136,357.95 × 46,544.89
  4. Step 4: Simplify right side
    90,886.78x = 6,346,765,783.38
  5. Step 5: Solve for x
    x = 6,346,765,783.38/90,886.78
  6. Step 6: Final answer
    x = 69,831.56

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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.