Home / 43,124,490.70-64,654,830.15-20,378,815.90

Finding the Fourth Proportional to 43,124,490.70, 64,654,830.15 and 20,378,815.90

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Solution

The fourth proportional to 43,124,490.70, 64,654,830.15 and 20,378,815.90 is: 30,553,146.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,124,490.70 : 64,654,830.15 = 20,378,815.90 : x
  2. Step 2: Convert to fraction form
    43,124,490.70/64,654,830.15 = 20,378,815.90/x
  3. Step 3: Cross multiply
    43,124,490.70x = 64,654,830.15 × 20,378,815.90
  4. Step 4: Simplify right side
    43,124,490.70x = 1,317,588,880,672,619.25
  5. Step 5: Solve for x
    x = 1,317,588,880,672,619.25/43,124,490.70
  6. Step 6: Final answer
    x = 30,553,146.47

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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.