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Finding the Fourth Proportional to 72,903.60, 109,063.80 and 63,151.20

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Solution

The fourth proportional to 72,903.60, 109,063.80 and 63,151.20 is: 94,474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,903.60 : 109,063.80 = 63,151.20 : x
  2. Step 2: Convert to fraction form
    72,903.60/109,063.80 = 63,151.20/x
  3. Step 3: Cross multiply
    72,903.60x = 109,063.80 × 63,151.20
  4. Step 4: Simplify right side
    72,903.60x = 6,887,509,846.56
  5. Step 5: Solve for x
    x = 6,887,509,846.56/72,903.60
  6. Step 6: Final answer
    x = 94,474.21

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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.