Home / 85,728.33-128,545.52-26,547.57

Finding the Fourth Proportional to 85,728.33, 128,545.52 and 26,547.57

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Solution

The fourth proportional to 85,728.33, 128,545.52 and 26,547.57 is: 39,806.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,728.33 : 128,545.52 = 26,547.57 : x
  2. Step 2: Convert to fraction form
    85,728.33/128,545.52 = 26,547.57/x
  3. Step 3: Cross multiply
    85,728.33x = 128,545.52 × 26,547.57
  4. Step 4: Simplify right side
    85,728.33x = 3,412,571,445.38
  5. Step 5: Solve for x
    x = 3,412,571,445.38/85,728.33
  6. Step 6: Final answer
    x = 39,806.81

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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.