Home / 77,310.07-105,888.51-72,770.83

Finding the Fourth Proportional to 77,310.07, 105,888.51 and 72,770.83

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Solution

The fourth proportional to 77,310.07, 105,888.51 and 72,770.83 is: 99,671.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,310.07 : 105,888.51 = 72,770.83 : x
  2. Step 2: Convert to fraction form
    77,310.07/105,888.51 = 72,770.83/x
  3. Step 3: Cross multiply
    77,310.07x = 105,888.51 × 72,770.83
  4. Step 4: Simplify right side
    77,310.07x = 7,705,594,578.24
  5. Step 5: Solve for x
    x = 7,705,594,578.24/77,310.07
  6. Step 6: Final answer
    x = 99,671.29

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.