Home / 91,719.89-137,557.04-51,756.41

Finding the Fourth Proportional to 91,719.89, 137,557.04 and 51,756.41

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Solution

The fourth proportional to 91,719.89, 137,557.04 and 51,756.41 is: 77,621.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,719.89 : 137,557.04 = 51,756.41 : x
  2. Step 2: Convert to fraction form
    91,719.89/137,557.04 = 51,756.41/x
  3. Step 3: Cross multiply
    91,719.89x = 137,557.04 × 51,756.41
  4. Step 4: Simplify right side
    91,719.89x = 7,119,459,033.91
  5. Step 5: Solve for x
    x = 7,119,459,033.91/91,719.89
  6. Step 6: Final answer
    x = 77,621.76

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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.