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Finding the Fourth Proportional to 75,964.86, 104,970.60 and 65,860.92

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Solution

The fourth proportional to 75,964.86, 104,970.60 and 65,860.92 is: 91,008.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,964.86 : 104,970.60 = 65,860.92 : x
  2. Step 2: Convert to fraction form
    75,964.86/104,970.60 = 65,860.92/x
  3. Step 3: Cross multiply
    75,964.86x = 104,970.60 × 65,860.92
  4. Step 4: Simplify right side
    75,964.86x = 6,913,460,288.95
  5. Step 5: Solve for x
    x = 6,913,460,288.95/75,964.86
  6. Step 6: Final answer
    x = 91,008.66

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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.