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Finding the Fourth Proportional to 99,808.95, 149,730.71 and 40,676.79

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Solution

The fourth proportional to 99,808.95, 149,730.71 and 40,676.79 is: 61,022.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,808.95 : 149,730.71 = 40,676.79 : x
  2. Step 2: Convert to fraction form
    99,808.95/149,730.71 = 40,676.79/x
  3. Step 3: Cross multiply
    99,808.95x = 149,730.71 × 40,676.79
  4. Step 4: Simplify right side
    99,808.95x = 6,090,564,443.84
  5. Step 5: Solve for x
    x = 6,090,564,443.84/99,808.95
  6. Step 6: Final answer
    x = 61,022.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.