Home / 78,727,422.86-118,077,675.13-21,206,241.94

Finding the Fourth Proportional to 78,727,422.86, 118,077,675.13 and 21,206,241.94

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Solution

The fourth proportional to 78,727,422.86, 118,077,675.13 and 21,206,241.94 is: 31,805,737.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727,422.86 : 118,077,675.13 = 21,206,241.94 : x
  2. Step 2: Convert to fraction form
    78,727,422.86/118,077,675.13 = 21,206,241.94/x
  3. Step 3: Cross multiply
    78,727,422.86x = 118,077,675.13 × 21,206,241.94
  4. Step 4: Simplify right side
    78,727,422.86x = 2,503,983,746,519,501
  5. Step 5: Solve for x
    x = 2,503,983,746,519,501/78,727,422.86
  6. Step 6: Final answer
    x = 31,805,737.51

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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.