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Finding the Fourth Proportional to 99,612.63, 137,461.42 and 54,289.64

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Solution

The fourth proportional to 99,612.63, 137,461.42 and 54,289.64 is: 74,917.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,612.63 : 137,461.42 = 54,289.64 : x
  2. Step 2: Convert to fraction form
    99,612.63/137,461.42 = 54,289.64/x
  3. Step 3: Cross multiply
    99,612.63x = 137,461.42 × 54,289.64
  4. Step 4: Simplify right side
    99,612.63x = 7,462,731,005.69
  5. Step 5: Solve for x
    x = 7,462,731,005.69/99,612.63
  6. Step 6: Final answer
    x = 74,917.52

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1.5x scale

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.