Home / 81,777,890.40-122,666,835.60-58,819,639.20

Finding the Fourth Proportional to 81,777,890.40, 122,666,835.60 and 58,819,639.20

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Solution

The fourth proportional to 81,777,890.40, 122,666,835.60 and 58,819,639.20 is: 88,229,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,777,890.40 : 122,666,835.60 = 58,819,639.20 : x
  2. Step 2: Convert to fraction form
    81,777,890.40/122,666,835.60 = 58,819,639.20/x
  3. Step 3: Cross multiply
    81,777,890.40x = 122,666,835.60 × 58,819,639.20
  4. Step 4: Simplify right side
    81,777,890.40x = 7,215,219,011,797,716
  5. Step 5: Solve for x
    x = 7,215,219,011,797,716/81,777,890.40
  6. Step 6: Final answer
    x = 88,229,458.80

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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.