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Finding the Fourth Proportional to 51,491.84, 71,090.84 and 39,531.36

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Solution

The fourth proportional to 51,491.84, 71,090.84 and 39,531.36 is: 54,577.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,491.84 : 71,090.84 = 39,531.36 : x
  2. Step 2: Convert to fraction form
    51,491.84/71,090.84 = 39,531.36/x
  3. Step 3: Cross multiply
    51,491.84x = 71,090.84 × 39,531.36
  4. Step 4: Simplify right side
    51,491.84x = 2,810,317,588.74
  5. Step 5: Solve for x
    x = 2,810,317,588.74/51,491.84
  6. Step 6: Final answer
    x = 54,577.92

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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.