Home / 105,432.50-145,499.19-57,685.84

Finding the Fourth Proportional to 105,432.50, 145,499.19 and 57,685.84

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Solution

The fourth proportional to 105,432.50, 145,499.19 and 57,685.84 is: 79,607.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,432.50 : 145,499.19 = 57,685.84 : x
  2. Step 2: Convert to fraction form
    105,432.50/145,499.19 = 57,685.84/x
  3. Step 3: Cross multiply
    105,432.50x = 145,499.19 × 57,685.84
  4. Step 4: Simplify right side
    105,432.50x = 8,393,242,414.40
  5. Step 5: Solve for x
    x = 8,393,242,414.40/105,432.50
  6. Step 6: Final answer
    x = 79,607.73

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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.