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Finding the Fourth Proportional to 112,940.40, 169,477.80 and 42,826.80

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Solution

The fourth proportional to 112,940.40, 169,477.80 and 42,826.80 is: 64,265.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,940.40 : 169,477.80 = 42,826.80 : x
  2. Step 2: Convert to fraction form
    112,940.40/169,477.80 = 42,826.80/x
  3. Step 3: Cross multiply
    112,940.40x = 169,477.80 × 42,826.80
  4. Step 4: Simplify right side
    112,940.40x = 7,258,191,845.04
  5. Step 5: Solve for x
    x = 7,258,191,845.04/112,940.40
  6. Step 6: Final answer
    x = 64,265.68

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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.