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Finding the Fourth Proportional to 51,356.66, 70,872.66 and 30,136.28

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Solution

The fourth proportional to 51,356.66, 70,872.66 and 30,136.28 is: 41,588.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,356.66 : 70,872.66 = 30,136.28 : x
  2. Step 2: Convert to fraction form
    51,356.66/70,872.66 = 30,136.28/x
  3. Step 3: Cross multiply
    51,356.66x = 70,872.66 × 30,136.28
  4. Step 4: Simplify right side
    51,356.66x = 2,135,838,326.10
  5. Step 5: Solve for x
    x = 2,135,838,326.10/51,356.66
  6. Step 6: Final answer
    x = 41,588.34

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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.