Home / 39,108.20-53,917.11-31,068.53

Finding the Fourth Proportional to 39,108.20, 53,917.11 and 31,068.53

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Solution

The fourth proportional to 39,108.20, 53,917.11 and 31,068.53 is: 42,833.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,108.20 : 53,917.11 = 31,068.53 : x
  2. Step 2: Convert to fraction form
    39,108.20/53,917.11 = 31,068.53/x
  3. Step 3: Cross multiply
    39,108.20x = 53,917.11 × 31,068.53
  4. Step 4: Simplify right side
    39,108.20x = 1,675,125,484.34
  5. Step 5: Solve for x
    x = 1,675,125,484.34/39,108.20
  6. Step 6: Final answer
    x = 42,833.10

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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.