Home / 90,660,716.80-125,108,140.80-49,406,718.40

Finding the Fourth Proportional to 90,660,716.80, 125,108,140.80 and 49,406,718.40

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Solution

The fourth proportional to 90,660,716.80, 125,108,140.80 and 49,406,718.40 is: 68,179,283.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,660,716.80 : 125,108,140.80 = 49,406,718.40 : x
  2. Step 2: Convert to fraction form
    90,660,716.80/125,108,140.80 = 49,406,718.40/x
  3. Step 3: Cross multiply
    90,660,716.80x = 125,108,140.80 × 49,406,718.40
  4. Step 4: Simplify right side
    90,660,716.80x = 6,181,182,682,053,150
  5. Step 5: Solve for x
    x = 6,181,182,682,053,150/90,660,716.80
  6. Step 6: Final answer
    x = 68,179,283.16

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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.