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Finding the Fourth Proportional to 60,985.50, 91,383.84 and 42,301.86

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Solution

The fourth proportional to 60,985.50, 91,383.84 and 42,301.86 is: 63,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,985.50 : 91,383.84 = 42,301.86 : x
  2. Step 2: Convert to fraction form
    60,985.50/91,383.84 = 42,301.86/x
  3. Step 3: Cross multiply
    60,985.50x = 91,383.84 × 42,301.86
  4. Step 4: Simplify right side
    60,985.50x = 3,865,706,405.94
  5. Step 5: Solve for x
    x = 3,865,706,405.94/60,985.50
  6. Step 6: Final answer
    x = 63,387.30

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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.