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Finding the Fourth Proportional to 45,303.76, 67,942.52 and 15,720.40

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Solution

The fourth proportional to 45,303.76, 67,942.52 and 15,720.40 is: 23,576.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,303.76 : 67,942.52 = 15,720.40 : x
  2. Step 2: Convert to fraction form
    45,303.76/67,942.52 = 15,720.40/x
  3. Step 3: Cross multiply
    45,303.76x = 67,942.52 × 15,720.40
  4. Step 4: Simplify right side
    45,303.76x = 1,068,083,591.41
  5. Step 5: Solve for x
    x = 1,068,083,591.41/45,303.76
  6. Step 6: Final answer
    x = 23,576.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.