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Finding the Fourth Proportional to 53,187.77, 79,781.40 and 15,748.05

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Solution

The fourth proportional to 53,187.77, 79,781.40 and 15,748.05 is: 23,622.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,187.77 : 79,781.40 = 15,748.05 : x
  2. Step 2: Convert to fraction form
    53,187.77/79,781.40 = 15,748.05/x
  3. Step 3: Cross multiply
    53,187.77x = 79,781.40 × 15,748.05
  4. Step 4: Simplify right side
    53,187.77x = 1,256,401,476.27
  5. Step 5: Solve for x
    x = 1,256,401,476.27/53,187.77
  6. Step 6: Final answer
    x = 23,622.00

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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.