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Finding the Fourth Proportional to 51,347.70, 70,858.94 and 28,685.25

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Solution

The fourth proportional to 51,347.70, 70,858.94 and 28,685.25 is: 39,585.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,347.70 : 70,858.94 = 28,685.25 : x
  2. Step 2: Convert to fraction form
    51,347.70/70,858.94 = 28,685.25/x
  3. Step 3: Cross multiply
    51,347.70x = 70,858.94 × 28,685.25
  4. Step 4: Simplify right side
    51,347.70x = 2,032,606,265.21
  5. Step 5: Solve for x
    x = 2,032,606,265.21/51,347.70
  6. Step 6: Final answer
    x = 39,585.15

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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.