Home / 91,614.11-137,439.32-28,431.53

Finding the Fourth Proportional to 91,614.11, 137,439.32 and 28,431.53

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Solution

The fourth proportional to 91,614.11, 137,439.32 and 28,431.53 is: 42,652.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,614.11 : 137,439.32 = 28,431.53 : x
  2. Step 2: Convert to fraction form
    91,614.11/137,439.32 = 28,431.53/x
  3. Step 3: Cross multiply
    91,614.11x = 137,439.32 × 28,431.53
  4. Step 4: Simplify right side
    91,614.11x = 3,907,609,915.77
  5. Step 5: Solve for x
    x = 3,907,609,915.77/91,614.11
  6. Step 6: Final answer
    x = 42,652.93

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1.5x scale

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.