Home / 85,448.12-128,186.75-26,282.48

Finding the Fourth Proportional to 85,448.12, 128,186.75 and 26,282.48

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Solution

The fourth proportional to 85,448.12, 128,186.75 and 26,282.48 is: 39,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,448.12 : 128,186.75 = 26,282.48 : x
  2. Step 2: Convert to fraction form
    85,448.12/128,186.75 = 26,282.48/x
  3. Step 3: Cross multiply
    85,448.12x = 128,186.75 × 26,282.48
  4. Step 4: Simplify right side
    85,448.12x = 3,369,065,117.91
  5. Step 5: Solve for x
    x = 3,369,065,117.91/85,448.12
  6. Step 6: Final answer
    x = 39,428.20

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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.