Home / 78,703,405.20-118,055,107.80-40,439,653.20

Finding the Fourth Proportional to 78,703,405.20, 118,055,107.80 and 40,439,653.20

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Solution

The fourth proportional to 78,703,405.20, 118,055,107.80 and 40,439,653.20 is: 60,659,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,703,405.20 : 118,055,107.80 = 40,439,653.20 : x
  2. Step 2: Convert to fraction form
    78,703,405.20/118,055,107.80 = 40,439,653.20/x
  3. Step 3: Cross multiply
    78,703,405.20x = 118,055,107.80 × 40,439,653.20
  4. Step 4: Simplify right side
    78,703,405.20x = 4,774,107,617,920,615
  5. Step 5: Solve for x
    x = 4,774,107,617,920,615/78,703,405.20
  6. Step 6: Final answer
    x = 60,659,479.80

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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.