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Finding the Fourth Proportional to 109,007.40, 163,535.40 and 42,441.60

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Solution

The fourth proportional to 109,007.40, 163,535.40 and 42,441.60 is: 63,671.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,007.40 : 163,535.40 = 42,441.60 : x
  2. Step 2: Convert to fraction form
    109,007.40/163,535.40 = 42,441.60/x
  3. Step 3: Cross multiply
    109,007.40x = 163,535.40 × 42,441.60
  4. Step 4: Simplify right side
    109,007.40x = 6,940,704,032.64
  5. Step 5: Solve for x
    x = 6,940,704,032.64/109,007.40
  6. Step 6: Final answer
    x = 63,671.86

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1.5x scale

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.