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Finding the Fourth Proportional to 53,265.88, 79,878.06 and 19,967.78

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Solution

The fourth proportional to 53,265.88, 79,878.06 and 19,967.78 is: 29,943.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,265.88 : 79,878.06 = 19,967.78 : x
  2. Step 2: Convert to fraction form
    53,265.88/79,878.06 = 19,967.78/x
  3. Step 3: Cross multiply
    53,265.88x = 79,878.06 × 19,967.78
  4. Step 4: Simplify right side
    53,265.88x = 1,594,987,528.91
  5. Step 5: Solve for x
    x = 1,594,987,528.91/53,265.88
  6. Step 6: Final answer
    x = 29,943.89

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1.5x scale

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.