Home / 85,811.12-118,379.32-53,997.56

Finding the Fourth Proportional to 85,811.12, 118,379.32 and 53,997.56

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Solution

The fourth proportional to 85,811.12, 118,379.32 and 53,997.56 is: 74,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,811.12 : 118,379.32 = 53,997.56 : x
  2. Step 2: Convert to fraction form
    85,811.12/118,379.32 = 53,997.56/x
  3. Step 3: Cross multiply
    85,811.12x = 118,379.32 × 53,997.56
  4. Step 4: Simplify right side
    85,811.12x = 6,392,194,434.46
  5. Step 5: Solve for x
    x = 6,392,194,434.46/85,811.12
  6. Step 6: Final answer
    x = 74,491.45

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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.