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Finding the Fourth Proportional to 51,252.34, 70,728.34 and 28,590.76

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Solution

The fourth proportional to 51,252.34, 70,728.34 and 28,590.76 is: 39,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,252.34 : 70,728.34 = 28,590.76 : x
  2. Step 2: Convert to fraction form
    51,252.34/70,728.34 = 28,590.76/x
  3. Step 3: Cross multiply
    51,252.34x = 70,728.34 × 28,590.76
  4. Step 4: Simplify right side
    51,252.34x = 2,022,176,994.14
  5. Step 5: Solve for x
    x = 2,022,176,994.14/51,252.34
  6. Step 6: Final answer
    x = 39,455.31

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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.