Home / 69,109,788.50-103,681,733.19-20,587,453.70

Finding the Fourth Proportional to 69,109,788.50, 103,681,733.19 and 20,587,453.70

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Solution

The fourth proportional to 69,109,788.50, 103,681,733.19 and 20,587,453.70 is: 30,886,259.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,109,788.50 : 103,681,733.19 = 20,587,453.70 : x
  2. Step 2: Convert to fraction form
    69,109,788.50/103,681,733.19 = 20,587,453.70/x
  3. Step 3: Cross multiply
    69,109,788.50x = 103,681,733.19 × 20,587,453.70
  4. Step 4: Simplify right side
    69,109,788.50x = 2,134,542,881,584,878.25
  5. Step 5: Solve for x
    x = 2,134,542,881,584,878.25/69,109,788.50
  6. Step 6: Final answer
    x = 30,886,259.79

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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.