Home / 85,654.86-128,482.28-26,491.04

Finding the Fourth Proportional to 85,654.86, 128,482.28 and 26,491.04

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Solution

The fourth proportional to 85,654.86, 128,482.28 and 26,491.04 is: 39,736.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,654.86 : 128,482.28 = 26,491.04 : x
  2. Step 2: Convert to fraction form
    85,654.86/128,482.28 = 26,491.04/x
  3. Step 3: Cross multiply
    85,654.86x = 128,482.28 × 26,491.04
  4. Step 4: Simplify right side
    85,654.86x = 3,403,629,218.77
  5. Step 5: Solve for x
    x = 3,403,629,218.77/85,654.86
  6. Step 6: Final answer
    x = 39,736.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.