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Finding the Fourth Proportional to 71,893.53, 107,840.30 and 21,973.77

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Solution

The fourth proportional to 71,893.53, 107,840.30 and 21,973.77 is: 32,960.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,893.53 : 107,840.30 = 21,973.77 : x
  2. Step 2: Convert to fraction form
    71,893.53/107,840.30 = 21,973.77/x
  3. Step 3: Cross multiply
    71,893.53x = 107,840.30 × 21,973.77
  4. Step 4: Simplify right side
    71,893.53x = 2,369,657,948.93
  5. Step 5: Solve for x
    x = 2,369,657,948.93/71,893.53
  6. Step 6: Final answer
    x = 32,960.66

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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.