Home / 39,900.86-54,663.95-38,405.19

Finding the Fourth Proportional to 39,900.86, 54,663.95 and 38,405.19

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Solution

The fourth proportional to 39,900.86, 54,663.95 and 38,405.19 is: 52,614.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,900.86 : 54,663.95 = 38,405.19 : x
  2. Step 2: Convert to fraction form
    39,900.86/54,663.95 = 38,405.19/x
  3. Step 3: Cross multiply
    39,900.86x = 54,663.95 × 38,405.19
  4. Step 4: Simplify right side
    39,900.86x = 2,099,379,385.90
  5. Step 5: Solve for x
    x = 2,099,379,385.90/39,900.86
  6. Step 6: Final answer
    x = 52,614.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.