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Finding the Fourth Proportional to 84,804.40, 127,209.30 and 42,661.44

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Solution

The fourth proportional to 84,804.40, 127,209.30 and 42,661.44 is: 63,993.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,804.40 : 127,209.30 = 42,661.44 : x
  2. Step 2: Convert to fraction form
    84,804.40/127,209.30 = 42,661.44/x
  3. Step 3: Cross multiply
    84,804.40x = 127,209.30 × 42,661.44
  4. Step 4: Simplify right side
    84,804.40x = 5,426,931,919.39
  5. Step 5: Solve for x
    x = 5,426,931,919.39/84,804.40
  6. Step 6: Final answer
    x = 63,993.52

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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.