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Finding the Fourth Proportional to 48,420.55, 72,602.87 and 18,803.81

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Solution

The fourth proportional to 48,420.55, 72,602.87 and 18,803.81 is: 28,194.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,420.55 : 72,602.87 = 18,803.81 : x
  2. Step 2: Convert to fraction form
    48,420.55/72,602.87 = 18,803.81/x
  3. Step 3: Cross multiply
    48,420.55x = 72,602.87 × 18,803.81
  4. Step 4: Simplify right side
    48,420.55x = 1,365,210,572.93
  5. Step 5: Solve for x
    x = 1,365,210,572.93/48,420.55
  6. Step 6: Final answer
    x = 28,194.86

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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.