Home / 105,591.40-145,715.70-57,847.72

Finding the Fourth Proportional to 105,591.40, 145,715.70 and 57,847.72

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Solution

The fourth proportional to 105,591.40, 145,715.70 and 57,847.72 is: 79,829.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,591.40 : 145,715.70 = 57,847.72 : x
  2. Step 2: Convert to fraction form
    105,591.40/145,715.70 = 57,847.72/x
  3. Step 3: Cross multiply
    105,591.40x = 145,715.70 × 57,847.72
  4. Step 4: Simplify right side
    105,591.40x = 8,429,321,013.20
  5. Step 5: Solve for x
    x = 8,429,321,013.20/105,591.40
  6. Step 6: Final answer
    x = 79,829.62

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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.