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Finding the Fourth Proportional to 53,959.98, 80,893.81 and 20,703.91

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Solution

The fourth proportional to 53,959.98, 80,893.81 and 20,703.91 is: 31,038.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,959.98 : 80,893.81 = 20,703.91 : x
  2. Step 2: Convert to fraction form
    53,959.98/80,893.81 = 20,703.91/x
  3. Step 3: Cross multiply
    53,959.98x = 80,893.81 × 20,703.91
  4. Step 4: Simplify right side
    53,959.98x = 1,674,818,011.32
  5. Step 5: Solve for x
    x = 1,674,818,011.32/53,959.98
  6. Step 6: Final answer
    x = 31,038.15

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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.