Home / 105,787.18-145,981.47-58,039.54

Finding the Fourth Proportional to 105,787.18, 145,981.47 and 58,039.54

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Solution

The fourth proportional to 105,787.18, 145,981.47 and 58,039.54 is: 80,091.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,787.18 : 145,981.47 = 58,039.54 : x
  2. Step 2: Convert to fraction form
    105,787.18/145,981.47 = 58,039.54/x
  3. Step 3: Cross multiply
    105,787.18x = 145,981.47 × 58,039.54
  4. Step 4: Simplify right side
    105,787.18x = 8,472,697,367.32
  5. Step 5: Solve for x
    x = 8,472,697,367.32/105,787.18
  6. Step 6: Final answer
    x = 80,091.91

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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.