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Finding the Fourth Proportional to 105,072.69, 145,008.90 and 59,764.85

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Solution

The fourth proportional to 105,072.69, 145,008.90 and 59,764.85 is: 82,480.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,072.69 : 145,008.90 = 59,764.85 : x
  2. Step 2: Convert to fraction form
    105,072.69/145,008.90 = 59,764.85/x
  3. Step 3: Cross multiply
    105,072.69x = 145,008.90 × 59,764.85
  4. Step 4: Simplify right side
    105,072.69x = 8,666,434,432.12
  5. Step 5: Solve for x
    x = 8,666,434,432.12/105,072.69
  6. Step 6: Final answer
    x = 82,480.37

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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.