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Finding the Fourth Proportional to 105,750.75, 145,949.00 and 61,038.75

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Solution

The fourth proportional to 105,750.75, 145,949.00 and 61,038.75 is: 84,240.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,750.75 : 145,949.00 = 61,038.75 : x
  2. Step 2: Convert to fraction form
    105,750.75/145,949.00 = 61,038.75/x
  3. Step 3: Cross multiply
    105,750.75x = 145,949.00 × 61,038.75
  4. Step 4: Simplify right side
    105,750.75x = 8,908,544,218.56
  5. Step 5: Solve for x
    x = 8,908,544,218.56/105,750.75
  6. Step 6: Final answer
    x = 84,240.96

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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.