Home / 91,742.81-137,621.90-39,152.75

Finding the Fourth Proportional to 91,742.81, 137,621.90 and 39,152.75

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Solution

The fourth proportional to 91,742.81, 137,621.90 and 39,152.75 is: 58,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,742.81 : 137,621.90 = 39,152.75 : x
  2. Step 2: Convert to fraction form
    91,742.81/137,621.90 = 39,152.75/x
  3. Step 3: Cross multiply
    91,742.81x = 137,621.90 × 39,152.75
  4. Step 4: Simplify right side
    91,742.81x = 5,388,275,649.46
  5. Step 5: Solve for x
    x = 5,388,275,649.46/91,742.81
  6. Step 6: Final answer
    x = 58,732.40

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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.