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Finding the Fourth Proportional to 51,066.87, 70,472.28 and 28,710.87

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Solution

The fourth proportional to 51,066.87, 70,472.28 and 28,710.87 is: 39,621.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,066.87 : 70,472.28 = 28,710.87 : x
  2. Step 2: Convert to fraction form
    51,066.87/70,472.28 = 28,710.87/x
  3. Step 3: Cross multiply
    51,066.87x = 70,472.28 × 28,710.87
  4. Step 4: Simplify right side
    51,066.87x = 2,023,320,469.68
  5. Step 5: Solve for x
    x = 2,023,320,469.68/51,066.87
  6. Step 6: Final answer
    x = 39,621.00

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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.