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Finding the Fourth Proportional to 98,376.88, 135,746.40 and 55,930.72

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Solution

The fourth proportional to 98,376.88, 135,746.40 and 55,930.72 is: 77,176.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,376.88 : 135,746.40 = 55,930.72 : x
  2. Step 2: Convert to fraction form
    98,376.88/135,746.40 = 55,930.72/x
  3. Step 3: Cross multiply
    98,376.88x = 135,746.40 × 55,930.72
  4. Step 4: Simplify right side
    98,376.88x = 7,592,393,889.41
  5. Step 5: Solve for x
    x = 7,592,393,889.41/98,376.88
  6. Step 6: Final answer
    x = 77,176.61

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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.