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Finding the Fourth Proportional to 51,062.40, 76,605.12 and 17,781.12

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Solution

The fourth proportional to 51,062.40, 76,605.12 and 17,781.12 is: 26,675.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,062.40 : 76,605.12 = 17,781.12 : x
  2. Step 2: Convert to fraction form
    51,062.40/76,605.12 = 17,781.12/x
  3. Step 3: Cross multiply
    51,062.40x = 76,605.12 × 17,781.12
  4. Step 4: Simplify right side
    51,062.40x = 1,362,124,831.33
  5. Step 5: Solve for x
    x = 1,362,124,831.33/51,062.40
  6. Step 6: Final answer
    x = 26,675.69

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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.