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Finding the Fourth Proportional to 69,009,085.80, 103,425,711.30 and 36,676,477.80

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Solution

The fourth proportional to 69,009,085.80, 103,425,711.30 and 36,676,477.80 is: 54,967,990.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,009,085.80 : 103,425,711.30 = 36,676,477.80 : x
  2. Step 2: Convert to fraction form
    69,009,085.80/103,425,711.30 = 36,676,477.80/x
  3. Step 3: Cross multiply
    69,009,085.80x = 103,425,711.30 × 36,676,477.80
  4. Step 4: Simplify right side
    69,009,085.80x = 3,793,290,804,443,658.50
  5. Step 5: Solve for x
    x = 3,793,290,804,443,658.50/69,009,085.80
  6. Step 6: Final answer
    x = 54,967,990.96

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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.