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Finding the Fourth Proportional to 98,800.41, 136,331.85 and 56,356.41

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Solution

The fourth proportional to 98,800.41, 136,331.85 and 56,356.41 is: 77,764.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,800.41 : 136,331.85 = 56,356.41 : x
  2. Step 2: Convert to fraction form
    98,800.41/136,331.85 = 56,356.41/x
  3. Step 3: Cross multiply
    98,800.41x = 136,331.85 × 56,356.41
  4. Step 4: Simplify right side
    98,800.41x = 7,683,173,634.66
  5. Step 5: Solve for x
    x = 7,683,173,634.66/98,800.41
  6. Step 6: Final answer
    x = 77,764.59

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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.