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Finding the Fourth Proportional to 72,953.53, 100,683.62 and 42,764.22

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Solution

The fourth proportional to 72,953.53, 100,683.62 and 42,764.22 is: 59,019.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,953.53 : 100,683.62 = 42,764.22 : x
  2. Step 2: Convert to fraction form
    72,953.53/100,683.62 = 42,764.22/x
  3. Step 3: Cross multiply
    72,953.53x = 100,683.62 × 42,764.22
  4. Step 4: Simplify right side
    72,953.53x = 4,305,656,476.08
  5. Step 5: Solve for x
    x = 4,305,656,476.08/72,953.53
  6. Step 6: Final answer
    x = 59,019.17

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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.