Home / 85,805.12-118,371.04-53,991.56

Finding the Fourth Proportional to 85,805.12, 118,371.04 and 53,991.56

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Solution

The fourth proportional to 85,805.12, 118,371.04 and 53,991.56 is: 74,483.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,805.12 : 118,371.04 = 53,991.56 : x
  2. Step 2: Convert to fraction form
    85,805.12/118,371.04 = 53,991.56/x
  3. Step 3: Cross multiply
    85,805.12x = 118,371.04 × 53,991.56
  4. Step 4: Simplify right side
    85,805.12x = 6,391,037,108.42
  5. Step 5: Solve for x
    x = 6,391,037,108.42/85,805.12
  6. Step 6: Final answer
    x = 74,483.17

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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.