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Finding the Fourth Proportional to 77,166.76, 116,328.52 and 72,023.04

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Solution

The fourth proportional to 77,166.76, 116,328.52 and 72,023.04 is: 108,574.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,166.76 : 116,328.52 = 72,023.04 : x
  2. Step 2: Convert to fraction form
    77,166.76/116,328.52 = 72,023.04/x
  3. Step 3: Cross multiply
    77,166.76x = 116,328.52 × 72,023.04
  4. Step 4: Simplify right side
    77,166.76x = 8,378,333,469.04
  5. Step 5: Solve for x
    x = 8,378,333,469.04/77,166.76
  6. Step 6: Final answer
    x = 108,574.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.