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Finding the Fourth Proportional to 51,251.25, 70,726.74 and 28,895.25

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Solution

The fourth proportional to 51,251.25, 70,726.74 and 28,895.25 is: 39,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,251.25 : 70,726.74 = 28,895.25 : x
  2. Step 2: Convert to fraction form
    51,251.25/70,726.74 = 28,895.25/x
  3. Step 3: Cross multiply
    51,251.25x = 70,726.74 × 28,895.25
  4. Step 4: Simplify right side
    51,251.25x = 2,043,666,833.99
  5. Step 5: Solve for x
    x = 2,043,666,833.99/51,251.25
  6. Step 6: Final answer
    x = 39,875.45

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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.