Home / 78,487,919.87-108,312,272.15-43,680,601.08

Finding the Fourth Proportional to 78,487,919.87, 108,312,272.15 and 43,680,601.08

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Solution

The fourth proportional to 78,487,919.87, 108,312,272.15 and 43,680,601.08 is: 60,278,641.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,487,919.87 : 108,312,272.15 = 43,680,601.08 : x
  2. Step 2: Convert to fraction form
    78,487,919.87/108,312,272.15 = 43,680,601.08/x
  3. Step 3: Cross multiply
    78,487,919.87x = 108,312,272.15 × 43,680,601.08
  4. Step 4: Simplify right side
    78,487,919.87x = 4,731,145,151,634,141
  5. Step 5: Solve for x
    x = 4,731,145,151,634,141/78,487,919.87
  6. Step 6: Final answer
    x = 60,278,641.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.