Home / 78,417,629.20-117,626,443.80-27,282,653.20

Finding the Fourth Proportional to 78,417,629.20, 117,626,443.80 and 27,282,653.20

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Solution

The fourth proportional to 78,417,629.20, 117,626,443.80 and 27,282,653.20 is: 40,923,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,417,629.20 : 117,626,443.80 = 27,282,653.20 : x
  2. Step 2: Convert to fraction form
    78,417,629.20/117,626,443.80 = 27,282,653.20/x
  3. Step 3: Cross multiply
    78,417,629.20x = 117,626,443.80 × 27,282,653.20
  4. Step 4: Simplify right side
    78,417,629.20x = 3,209,161,473,344,690
  5. Step 5: Solve for x
    x = 3,209,161,473,344,690/78,417,629.20
  6. Step 6: Final answer
    x = 40,923,979.80

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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.