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Finding the Fourth Proportional to 101,632, 140,252.88 and 56,920

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Solution

The fourth proportional to 101,632, 140,252.88 and 56,920 is: 78,550.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,632 : 140,252.88 = 56,920 : x
  2. Step 2: Convert to fraction form
    101,632/140,252.88 = 56,920/x
  3. Step 3: Cross multiply
    101,632x = 140,252.88 × 56,920
  4. Step 4: Simplify right side
    101,632x = 7,983,193,929.60
  5. Step 5: Solve for x
    x = 7,983,193,929.60/101,632
  6. Step 6: Final answer
    x = 78,550.00

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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.