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Finding the Fourth Proportional to 72,803.46, 100,468.76 and 40,972.53

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Solution

The fourth proportional to 72,803.46, 100,468.76 and 40,972.53 is: 56,542.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,803.46 : 100,468.76 = 40,972.53 : x
  2. Step 2: Convert to fraction form
    72,803.46/100,468.76 = 40,972.53/x
  3. Step 3: Cross multiply
    72,803.46x = 100,468.76 × 40,972.53
  4. Step 4: Simplify right side
    72,803.46x = 4,116,459,078.30
  5. Step 5: Solve for x
    x = 4,116,459,078.30/72,803.46
  6. Step 6: Final answer
    x = 56,542.08

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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.