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Finding the Fourth Proportional to 72,748.62, 100,336.21 and 47,263.19

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Solution

The fourth proportional to 72,748.62, 100,336.21 and 47,263.19 is: 65,186.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,748.62 : 100,336.21 = 47,263.19 : x
  2. Step 2: Convert to fraction form
    72,748.62/100,336.21 = 47,263.19/x
  3. Step 3: Cross multiply
    72,748.62x = 100,336.21 × 47,263.19
  4. Step 4: Simplify right side
    72,748.62x = 4,742,208,737.27
  5. Step 5: Solve for x
    x = 4,742,208,737.27/72,748.62
  6. Step 6: Final answer
    x = 65,186.24

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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.