Home / 91,578.27-137,256.69-47,180.81

Finding the Fourth Proportional to 91,578.27, 137,256.69 and 47,180.81

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Solution

The fourth proportional to 91,578.27, 137,256.69 and 47,180.81 is: 70,714.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,578.27 : 137,256.69 = 47,180.81 : x
  2. Step 2: Convert to fraction form
    91,578.27/137,256.69 = 47,180.81/x
  3. Step 3: Cross multiply
    91,578.27x = 137,256.69 × 47,180.81
  4. Step 4: Simplify right side
    91,578.27x = 6,475,881,125.84
  5. Step 5: Solve for x
    x = 6,475,881,125.84/91,578.27
  6. Step 6: Final answer
    x = 70,714.17

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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.