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Finding the Fourth Proportional to 105,483.87, 145,562.67 and 57,737.61

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Solution

The fourth proportional to 105,483.87, 145,562.67 and 57,737.61 is: 79,675.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,483.87 : 145,562.67 = 57,737.61 : x
  2. Step 2: Convert to fraction form
    105,483.87/145,562.67 = 57,737.61/x
  3. Step 3: Cross multiply
    105,483.87x = 145,562.67 × 57,737.61
  4. Step 4: Simplify right side
    105,483.87x = 8,404,440,671.02
  5. Step 5: Solve for x
    x = 8,404,440,671.02/105,483.87
  6. Step 6: Final answer
    x = 79,675.13

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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.