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Finding the Fourth Proportional to 103,630.40, 155,368.80 and 44,417.60

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Solution

The fourth proportional to 103,630.40, 155,368.80 and 44,417.60 is: 66,593.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.40 : 155,368.80 = 44,417.60 : x
  2. Step 2: Convert to fraction form
    103,630.40/155,368.80 = 44,417.60/x
  3. Step 3: Cross multiply
    103,630.40x = 155,368.80 × 44,417.60
  4. Step 4: Simplify right side
    103,630.40x = 6,901,109,210.88
  5. Step 5: Solve for x
    x = 6,901,109,210.88/103,630.40
  6. Step 6: Final answer
    x = 66,593.48

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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.