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Finding the Fourth Proportional to 74,999.59, 103,505.81 and 42,744.08

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Solution

The fourth proportional to 74,999.59, 103,505.81 and 42,744.08 is: 58,990.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,999.59 : 103,505.81 = 42,744.08 : x
  2. Step 2: Convert to fraction form
    74,999.59/103,505.81 = 42,744.08/x
  3. Step 3: Cross multiply
    74,999.59x = 103,505.81 × 42,744.08
  4. Step 4: Simplify right side
    74,999.59x = 4,424,260,623.10
  5. Step 5: Solve for x
    x = 4,424,260,623.10/74,999.59
  6. Step 6: Final answer
    x = 58,990.46

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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.