Home / 85,413.43-128,132.39-26,254.07

Finding the Fourth Proportional to 85,413.43, 128,132.39 and 26,254.07

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Solution

The fourth proportional to 85,413.43, 128,132.39 and 26,254.07 is: 39,384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,413.43 : 128,132.39 = 26,254.07 : x
  2. Step 2: Convert to fraction form
    85,413.43/128,132.39 = 26,254.07/x
  3. Step 3: Cross multiply
    85,413.43x = 128,132.39 × 26,254.07
  4. Step 4: Simplify right side
    85,413.43x = 3,363,996,161.30
  5. Step 5: Solve for x
    x = 3,363,996,161.30/85,413.43
  6. Step 6: Final answer
    x = 39,384.86

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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.