Home / 105,432.66-145,496.84-57,685.91

Finding the Fourth Proportional to 105,432.66, 145,496.84 and 57,685.91

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Solution

The fourth proportional to 105,432.66, 145,496.84 and 57,685.91 is: 79,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,432.66 : 145,496.84 = 57,685.91 : x
  2. Step 2: Convert to fraction form
    105,432.66/145,496.84 = 57,685.91/x
  3. Step 3: Cross multiply
    105,432.66x = 145,496.84 × 57,685.91
  4. Step 4: Simplify right side
    105,432.66x = 8,393,116,601.61
  5. Step 5: Solve for x
    x = 8,393,116,601.61/105,432.66
  6. Step 6: Final answer
    x = 79,606.42

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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.