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Finding the Fourth Proportional to 74,641.45, 103,001.73 and 40,649.80

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Solution

The fourth proportional to 74,641.45, 103,001.73 and 40,649.80 is: 56,094.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,641.45 : 103,001.73 = 40,649.80 : x
  2. Step 2: Convert to fraction form
    74,641.45/103,001.73 = 40,649.80/x
  3. Step 3: Cross multiply
    74,641.45x = 103,001.73 × 40,649.80
  4. Step 4: Simplify right side
    74,641.45x = 4,186,999,724.15
  5. Step 5: Solve for x
    x = 4,186,999,724.15/74,641.45
  6. Step 6: Final answer
    x = 56,094.83

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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.