Home / 85,486.07-128,254.91-25,516.48

Finding the Fourth Proportional to 85,486.07, 128,254.91 and 25,516.48

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Solution

The fourth proportional to 85,486.07, 128,254.91 and 25,516.48 is: 38,282.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,486.07 : 128,254.91 = 25,516.48 : x
  2. Step 2: Convert to fraction form
    85,486.07/128,254.91 = 25,516.48/x
  3. Step 3: Cross multiply
    85,486.07x = 128,254.91 × 25,516.48
  4. Step 4: Simplify right side
    85,486.07x = 3,272,613,854.42
  5. Step 5: Solve for x
    x = 3,272,613,854.42/85,486.07
  6. Step 6: Final answer
    x = 38,282.42

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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.