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Finding the Fourth Proportional to 51,358.62, 70,873.56 and 28,697.76

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Solution

The fourth proportional to 51,358.62, 70,873.56 and 28,697.76 is: 39,602.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,358.62 : 70,873.56 = 28,697.76 : x
  2. Step 2: Convert to fraction form
    51,358.62/70,873.56 = 28,697.76/x
  3. Step 3: Cross multiply
    51,358.62x = 70,873.56 × 28,697.76
  4. Step 4: Simplify right side
    51,358.62x = 2,033,912,415.23
  5. Step 5: Solve for x
    x = 2,033,912,415.23/51,358.62
  6. Step 6: Final answer
    x = 39,602.16

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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.