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Finding the Fourth Proportional to 45,172.68, 67,746.22 and 28,507.72

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Solution

The fourth proportional to 45,172.68, 67,746.22 and 28,507.72 is: 42,753.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,172.68 : 67,746.22 = 28,507.72 : x
  2. Step 2: Convert to fraction form
    45,172.68/67,746.22 = 28,507.72/x
  3. Step 3: Cross multiply
    45,172.68x = 67,746.22 × 28,507.72
  4. Step 4: Simplify right side
    45,172.68x = 1,931,290,270.82
  5. Step 5: Solve for x
    x = 1,931,290,270.82/45,172.68
  6. Step 6: Final answer
    x = 42,753.50

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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.