Home / 77,390.60-115,913.10-59,721.80

Finding the Fourth Proportional to 77,390.60, 115,913.10 and 59,721.80

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Solution

The fourth proportional to 77,390.60, 115,913.10 and 59,721.80 is: 89,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,390.60 : 115,913.10 = 59,721.80 : x
  2. Step 2: Convert to fraction form
    77,390.60/115,913.10 = 59,721.80/x
  3. Step 3: Cross multiply
    77,390.60x = 115,913.10 × 59,721.80
  4. Step 4: Simplify right side
    77,390.60x = 6,922,538,975.58
  5. Step 5: Solve for x
    x = 6,922,538,975.58/77,390.60
  6. Step 6: Final answer
    x = 89,449.35

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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.