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Finding the Fourth Proportional to 72,070.62, 108,106.32 and 47,267.74

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Solution

The fourth proportional to 72,070.62, 108,106.32 and 47,267.74 is: 70,901.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,070.62 : 108,106.32 = 47,267.74 : x
  2. Step 2: Convert to fraction form
    72,070.62/108,106.32 = 47,267.74/x
  3. Step 3: Cross multiply
    72,070.62x = 108,106.32 × 47,267.74
  4. Step 4: Simplify right side
    72,070.62x = 5,109,941,155.85
  5. Step 5: Solve for x
    x = 5,109,941,155.85/72,070.62
  6. Step 6: Final answer
    x = 70,901.86

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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.