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Finding the Fourth Proportional to 51,411.84, 70,946.92 and 28,750.88

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Solution

The fourth proportional to 51,411.84, 70,946.92 and 28,750.88 is: 39,675.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,411.84 : 70,946.92 = 28,750.88 : x
  2. Step 2: Convert to fraction form
    51,411.84/70,946.92 = 28,750.88/x
  3. Step 3: Cross multiply
    51,411.84x = 70,946.92 × 28,750.88
  4. Step 4: Simplify right side
    51,411.84x = 2,039,786,383.29
  5. Step 5: Solve for x
    x = 2,039,786,383.29/51,411.84
  6. Step 6: Final answer
    x = 39,675.42

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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.