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Finding the Fourth Proportional to 68,693.52, 94,779.36 and 40,393.92

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Solution

The fourth proportional to 68,693.52, 94,779.36 and 40,393.92 is: 55,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,693.52 : 94,779.36 = 40,393.92 : x
  2. Step 2: Convert to fraction form
    68,693.52/94,779.36 = 40,393.92/x
  3. Step 3: Cross multiply
    68,693.52x = 94,779.36 × 40,393.92
  4. Step 4: Simplify right side
    68,693.52x = 3,828,509,885.49
  5. Step 5: Solve for x
    x = 3,828,509,885.49/68,693.52
  6. Step 6: Final answer
    x = 55,733.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.