Home / 84,002,021.60-126,003,032.40-61,043,770.40

Finding the Fourth Proportional to 84,002,021.60, 126,003,032.40 and 61,043,770.40

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Solution

The fourth proportional to 84,002,021.60, 126,003,032.40 and 61,043,770.40 is: 91,565,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,002,021.60 : 126,003,032.40 = 61,043,770.40 : x
  2. Step 2: Convert to fraction form
    84,002,021.60/126,003,032.40 = 61,043,770.40/x
  3. Step 3: Cross multiply
    84,002,021.60x = 126,003,032.40 × 61,043,770.40
  4. Step 4: Simplify right side
    84,002,021.60x = 7,691,700,179,529,361
  5. Step 5: Solve for x
    x = 7,691,700,179,529,361/84,002,021.60
  6. Step 6: Final answer
    x = 91,565,655.60

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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.