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Finding the Fourth Proportional to 61,261, 91,875.08 and 16,877.20

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Solution

The fourth proportional to 61,261, 91,875.08 and 16,877.20 is: 25,311.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,261 : 91,875.08 = 16,877.20 : x
  2. Step 2: Convert to fraction form
    61,261/91,875.08 = 16,877.20/x
  3. Step 3: Cross multiply
    61,261x = 91,875.08 × 16,877.20
  4. Step 4: Simplify right side
    61,261x = 1,550,594,100.18
  5. Step 5: Solve for x
    x = 1,550,594,100.18/61,261
  6. Step 6: Final answer
    x = 25,311.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.