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Finding the Fourth Proportional to 74,979, 103,472.10 and 41,445

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Solution

The fourth proportional to 74,979, 103,472.10 and 41,445 is: 57,194.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,979 : 103,472.10 = 41,445 : x
  2. Step 2: Convert to fraction form
    74,979/103,472.10 = 41,445/x
  3. Step 3: Cross multiply
    74,979x = 103,472.10 × 41,445
  4. Step 4: Simplify right side
    74,979x = 4,288,401,184.50
  5. Step 5: Solve for x
    x = 4,288,401,184.50/74,979
  6. Step 6: Final answer
    x = 57,194.70

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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.