Home / 85,539.90-128,301.59-26,359.68

Finding the Fourth Proportional to 85,539.90, 128,301.59 and 26,359.68

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Solution

The fourth proportional to 85,539.90, 128,301.59 and 26,359.68 is: 39,536.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,539.90 : 128,301.59 = 26,359.68 : x
  2. Step 2: Convert to fraction form
    85,539.90/128,301.59 = 26,359.68/x
  3. Step 3: Cross multiply
    85,539.90x = 128,301.59 × 26,359.68
  4. Step 4: Simplify right side
    85,539.90x = 3,381,988,855.89
  5. Step 5: Solve for x
    x = 3,381,988,855.89/85,539.90
  6. Step 6: Final answer
    x = 39,536.97

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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.