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Finding the Fourth Proportional to 92,838.66, 128,119.38 and 56,541.82

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Solution

The fourth proportional to 92,838.66, 128,119.38 and 56,541.82 is: 78,028.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,838.66 : 128,119.38 = 56,541.82 : x
  2. Step 2: Convert to fraction form
    92,838.66/128,119.38 = 56,541.82/x
  3. Step 3: Cross multiply
    92,838.66x = 128,119.38 × 56,541.82
  4. Step 4: Simplify right side
    92,838.66x = 7,244,102,922.47
  5. Step 5: Solve for x
    x = 7,244,102,922.47/92,838.66
  6. Step 6: Final answer
    x = 78,028.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.