Home / 90,781.50-135,881.10-48,556.02

Finding the Fourth Proportional to 90,781.50, 135,881.10 and 48,556.02

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Solution

The fourth proportional to 90,781.50, 135,881.10 and 48,556.02 is: 72,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,781.50 : 135,881.10 = 48,556.02 : x
  2. Step 2: Convert to fraction form
    90,781.50/135,881.10 = 48,556.02/x
  3. Step 3: Cross multiply
    90,781.50x = 135,881.10 × 48,556.02
  4. Step 4: Simplify right side
    90,781.50x = 6,597,845,409.22
  5. Step 5: Solve for x
    x = 6,597,845,409.22/90,781.50
  6. Step 6: Final answer
    x = 72,678.30

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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.