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Finding the Fourth Proportional to 53,111, 79,666.48 and 19,833.66

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Solution

The fourth proportional to 53,111, 79,666.48 and 19,833.66 is: 29,750.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,111 : 79,666.48 = 19,833.66 : x
  2. Step 2: Convert to fraction form
    53,111/79,666.48 = 19,833.66/x
  3. Step 3: Cross multiply
    53,111x = 79,666.48 × 19,833.66
  4. Step 4: Simplify right side
    53,111x = 1,580,077,877.72
  5. Step 5: Solve for x
    x = 1,580,077,877.72/53,111
  6. Step 6: Final answer
    x = 29,750.48

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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.