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Finding the Fourth Proportional to 51,411.96, 70,948.01 and 28,750.69

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Solution

The fourth proportional to 51,411.96, 70,948.01 and 28,750.69 is: 39,675.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,411.96 : 70,948.01 = 28,750.69 : x
  2. Step 2: Convert to fraction form
    51,411.96/70,948.01 = 28,750.69/x
  3. Step 3: Cross multiply
    51,411.96x = 70,948.01 × 28,750.69
  4. Step 4: Simplify right side
    51,411.96x = 2,039,804,241.63
  5. Step 5: Solve for x
    x = 2,039,804,241.63/51,411.96
  6. Step 6: Final answer
    x = 39,675.68

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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.