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Finding the Fourth Proportional to 74,960.64, 103,445.44 and 40,969.12

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Solution

The fourth proportional to 74,960.64, 103,445.44 and 40,969.12 is: 56,537.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,960.64 : 103,445.44 = 40,969.12 : x
  2. Step 2: Convert to fraction form
    74,960.64/103,445.44 = 40,969.12/x
  3. Step 3: Cross multiply
    74,960.64x = 103,445.44 × 40,969.12
  4. Step 4: Simplify right side
    74,960.64x = 4,238,068,801.00
  5. Step 5: Solve for x
    x = 4,238,068,801.00/74,960.64
  6. Step 6: Final answer
    x = 56,537.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.