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Finding the Fourth Proportional to 72,206.60, 108,018.30 and 62,454.20

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Solution

The fourth proportional to 72,206.60, 108,018.30 and 62,454.20 is: 93,429.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,206.60 : 108,018.30 = 62,454.20 : x
  2. Step 2: Convert to fraction form
    72,206.60/108,018.30 = 62,454.20/x
  3. Step 3: Cross multiply
    72,206.60x = 108,018.30 × 62,454.20
  4. Step 4: Simplify right side
    72,206.60x = 6,746,196,511.86
  5. Step 5: Solve for x
    x = 6,746,196,511.86/72,206.60
  6. Step 6: Final answer
    x = 93,429.08

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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.