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Finding the Fourth Proportional to 51,312.34, 70,809.96 and 28,650.70

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Solution

The fourth proportional to 51,312.34, 70,809.96 and 28,650.70 is: 39,537.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,312.34 : 70,809.96 = 28,650.70 : x
  2. Step 2: Convert to fraction form
    51,312.34/70,809.96 = 28,650.70/x
  3. Step 3: Cross multiply
    51,312.34x = 70,809.96 × 28,650.70
  4. Step 4: Simplify right side
    51,312.34x = 2,028,754,920.97
  5. Step 5: Solve for x
    x = 2,028,754,920.97/51,312.34
  6. Step 6: Final answer
    x = 39,537.37

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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.