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Finding the Fourth Proportional to 98,787.37, 136,326.72 and 53,465.44

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Solution

The fourth proportional to 98,787.37, 136,326.72 and 53,465.44 is: 73,782.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,787.37 : 136,326.72 = 53,465.44 : x
  2. Step 2: Convert to fraction form
    98,787.37/136,326.72 = 53,465.44/x
  3. Step 3: Cross multiply
    98,787.37x = 136,326.72 × 53,465.44
  4. Step 4: Simplify right side
    98,787.37x = 7,288,768,068.56
  5. Step 5: Solve for x
    x = 7,288,768,068.56/98,787.37
  6. Step 6: Final answer
    x = 73,782.39

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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.