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Finding the Fourth Proportional to 71,187.66, 106,975.49 and 37,931.49

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Solution

The fourth proportional to 71,187.66, 106,975.49 and 37,931.49 is: 57,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,187.66 : 106,975.49 = 37,931.49 : x
  2. Step 2: Convert to fraction form
    71,187.66/106,975.49 = 37,931.49/x
  3. Step 3: Cross multiply
    71,187.66x = 106,975.49 × 37,931.49
  4. Step 4: Simplify right side
    71,187.66x = 4,057,739,539.52
  5. Step 5: Solve for x
    x = 4,057,739,539.52/71,187.66
  6. Step 6: Final answer
    x = 57,000.60

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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.