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Finding the Fourth Proportional to 51,212.56, 70,673.66 and 28,553

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Solution

The fourth proportional to 51,212.56, 70,673.66 and 28,553 is: 39,403.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,212.56 : 70,673.66 = 28,553 : x
  2. Step 2: Convert to fraction form
    51,212.56/70,673.66 = 28,553/x
  3. Step 3: Cross multiply
    51,212.56x = 70,673.66 × 28,553
  4. Step 4: Simplify right side
    51,212.56x = 2,017,945,013.98
  5. Step 5: Solve for x
    x = 2,017,945,013.98/51,212.56
  6. Step 6: Final answer
    x = 39,403.32

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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.