Home / 42,179,979.70-63,269,969.55-13,429,021.60

Finding the Fourth Proportional to 42,179,979.70, 63,269,969.55 and 13,429,021.60

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Solution

The fourth proportional to 42,179,979.70, 63,269,969.55 and 13,429,021.60 is: 20,143,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,179,979.70 : 63,269,969.55 = 13,429,021.60 : x
  2. Step 2: Convert to fraction form
    42,179,979.70/63,269,969.55 = 13,429,021.60/x
  3. Step 3: Cross multiply
    42,179,979.70x = 63,269,969.55 × 13,429,021.60
  4. Step 4: Simplify right side
    42,179,979.70x = 849,653,787,718,292.25
  5. Step 5: Solve for x
    x = 849,653,787,718,292.25/42,179,979.70
  6. Step 6: Final answer
    x = 20,143,532.40

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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.