Home / 72,764,806.05-109,147,209.08-66,812,666.85

Finding the Fourth Proportional to 72,764,806.05, 109,147,209.08 and 66,812,666.85

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Solution

The fourth proportional to 72,764,806.05, 109,147,209.08 and 66,812,666.85 is: 100,219,000.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,764,806.05 : 109,147,209.08 = 66,812,666.85 : x
  2. Step 2: Convert to fraction form
    72,764,806.05/109,147,209.08 = 66,812,666.85/x
  3. Step 3: Cross multiply
    72,764,806.05x = 109,147,209.08 × 66,812,666.85
  4. Step 4: Simplify right side
    72,764,806.05x = 7,292,416,117,535,272
  5. Step 5: Solve for x
    x = 7,292,416,117,535,272/72,764,806.05
  6. Step 6: Final answer
    x = 100,219,000.28

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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.