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Finding the Fourth Proportional to 61,990.70, 92,986.05 and 43,328.30

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Solution

The fourth proportional to 61,990.70, 92,986.05 and 43,328.30 is: 64,992.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,990.70 : 92,986.05 = 43,328.30 : x
  2. Step 2: Convert to fraction form
    61,990.70/92,986.05 = 43,328.30/x
  3. Step 3: Cross multiply
    61,990.70x = 92,986.05 × 43,328.30
  4. Step 4: Simplify right side
    61,990.70x = 4,028,927,470.22
  5. Step 5: Solve for x
    x = 4,028,927,470.22/61,990.70
  6. Step 6: Final answer
    x = 64,992.45

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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.