Home / 78,727,422.74-118,077,674.94-21,206,241.81

Finding the Fourth Proportional to 78,727,422.74, 118,077,674.94 and 21,206,241.81

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Solution

The fourth proportional to 78,727,422.74, 118,077,674.94 and 21,206,241.81 is: 31,805,737.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727,422.74 : 118,077,674.94 = 21,206,241.81 : x
  2. Step 2: Convert to fraction form
    78,727,422.74/118,077,674.94 = 21,206,241.81/x
  3. Step 3: Cross multiply
    78,727,422.74x = 118,077,674.94 × 21,206,241.81
  4. Step 4: Simplify right side
    78,727,422.74x = 2,503,983,727,140,217
  5. Step 5: Solve for x
    x = 2,503,983,727,140,217/78,727,422.74
  6. Step 6: Final answer
    x = 31,805,737.32

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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.