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Finding the Fourth Proportional to 99,885.68, 137,836.95 and 54,563.01

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Solution

The fourth proportional to 99,885.68, 137,836.95 and 54,563.01 is: 75,294.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,885.68 : 137,836.95 = 54,563.01 : x
  2. Step 2: Convert to fraction form
    99,885.68/137,836.95 = 54,563.01/x
  3. Step 3: Cross multiply
    99,885.68x = 137,836.95 × 54,563.01
  4. Step 4: Simplify right side
    99,885.68x = 7,520,798,881.22
  5. Step 5: Solve for x
    x = 7,520,798,881.22/99,885.68
  6. Step 6: Final answer
    x = 75,294.07

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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.