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Finding the Fourth Proportional to 79,872,448.80, 119,808,673.20 and 39,474,573.60

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Solution

The fourth proportional to 79,872,448.80, 119,808,673.20 and 39,474,573.60 is: 59,211,860.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,872,448.80 : 119,808,673.20 = 39,474,573.60 : x
  2. Step 2: Convert to fraction form
    79,872,448.80/119,808,673.20 = 39,474,573.60/x
  3. Step 3: Cross multiply
    79,872,448.80x = 119,808,673.20 × 39,474,573.60
  4. Step 4: Simplify right side
    79,872,448.80x = 4,729,396,288,151,748
  5. Step 5: Solve for x
    x = 4,729,396,288,151,748/79,872,448.80
  6. Step 6: Final answer
    x = 59,211,860.40

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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.