Home / 53,142.85-73,276.30-39,691.38

Finding the Fourth Proportional to 53,142.85, 73,276.30 and 39,691.38

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Solution

The fourth proportional to 53,142.85, 73,276.30 and 39,691.38 is: 54,728.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,142.85 : 73,276.30 = 39,691.38 : x
  2. Step 2: Convert to fraction form
    53,142.85/73,276.30 = 39,691.38/x
  3. Step 3: Cross multiply
    53,142.85x = 73,276.30 × 39,691.38
  4. Step 4: Simplify right side
    53,142.85x = 2,908,437,569.43
  5. Step 5: Solve for x
    x = 2,908,437,569.43/53,142.85
  6. Step 6: Final answer
    x = 54,728.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.