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Finding the Fourth Proportional to 57,918.60, 79,877.88 and 45,963

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Solution

The fourth proportional to 57,918.60, 79,877.88 and 45,963 is: 63,389.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,918.60 : 79,877.88 = 45,963 : x
  2. Step 2: Convert to fraction form
    57,918.60/79,877.88 = 45,963/x
  3. Step 3: Cross multiply
    57,918.60x = 79,877.88 × 45,963
  4. Step 4: Simplify right side
    57,918.60x = 3,671,426,998.44
  5. Step 5: Solve for x
    x = 3,671,426,998.44/57,918.60
  6. Step 6: Final answer
    x = 63,389.43

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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.