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Finding the Fourth Proportional to 76,087.09, 105,000.10 and 42,553.09

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Solution

The fourth proportional to 76,087.09, 105,000.10 and 42,553.09 is: 58,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,087.09 : 105,000.10 = 42,553.09 : x
  2. Step 2: Convert to fraction form
    76,087.09/105,000.10 = 42,553.09/x
  3. Step 3: Cross multiply
    76,087.09x = 105,000.10 × 42,553.09
  4. Step 4: Simplify right side
    76,087.09x = 4,468,078,705.31
  5. Step 5: Solve for x
    x = 4,468,078,705.31/76,087.09
  6. Step 6: Final answer
    x = 58,723.22

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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.