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Finding the Fourth Proportional to 72,774.40, 100,424.44 and 40,941.96

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Solution

The fourth proportional to 72,774.40, 100,424.44 and 40,941.96 is: 56,497.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,774.40 : 100,424.44 = 40,941.96 : x
  2. Step 2: Convert to fraction form
    72,774.40/100,424.44 = 40,941.96/x
  3. Step 3: Cross multiply
    72,774.40x = 100,424.44 × 40,941.96
  4. Step 4: Simplify right side
    72,774.40x = 4,111,573,405.50
  5. Step 5: Solve for x
    x = 4,111,573,405.50/72,774.40
  6. Step 6: Final answer
    x = 56,497.52

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1.5x scale

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.