Home / 72,776,037.80-109,164,056.70-66,823,898.60

Finding the Fourth Proportional to 72,776,037.80, 109,164,056.70 and 66,823,898.60

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Solution

The fourth proportional to 72,776,037.80, 109,164,056.70 and 66,823,898.60 is: 100,235,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,776,037.80 : 109,164,056.70 = 66,823,898.60 : x
  2. Step 2: Convert to fraction form
    72,776,037.80/109,164,056.70 = 66,823,898.60/x
  3. Step 3: Cross multiply
    72,776,037.80x = 109,164,056.70 × 66,823,898.60
  4. Step 4: Simplify right side
    72,776,037.80x = 7,294,767,855,685,451
  5. Step 5: Solve for x
    x = 7,294,767,855,685,451/72,776,037.80
  6. Step 6: Final answer
    x = 100,235,847.90

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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.