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Finding the Fourth Proportional to 79,597,828.80, 119,426,234.40 and 76,648,708.80

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Solution

The fourth proportional to 79,597,828.80, 119,426,234.40 and 76,648,708.80 is: 115,001,461.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,597,828.80 : 119,426,234.40 = 76,648,708.80 : x
  2. Step 2: Convert to fraction form
    79,597,828.80/119,426,234.40 = 76,648,708.80/x
  3. Step 3: Cross multiply
    79,597,828.80x = 119,426,234.40 × 76,648,708.80
  4. Step 4: Simplify right side
    79,597,828.80x = 9,153,866,663,606,142
  5. Step 5: Solve for x
    x = 9,153,866,663,606,142/79,597,828.80
  6. Step 6: Final answer
    x = 115,001,461.74

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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.