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Finding the Fourth Proportional to 51,989.93, 77,995.43 and 16,920.17

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Solution

The fourth proportional to 51,989.93, 77,995.43 and 16,920.17 is: 25,383.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,989.93 : 77,995.43 = 16,920.17 : x
  2. Step 2: Convert to fraction form
    51,989.93/77,995.43 = 16,920.17/x
  3. Step 3: Cross multiply
    51,989.93x = 77,995.43 × 16,920.17
  4. Step 4: Simplify right side
    51,989.93x = 1,319,695,934.82
  5. Step 5: Solve for x
    x = 1,319,695,934.82/51,989.93
  6. Step 6: Final answer
    x = 25,383.68

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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.