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Finding the Fourth Proportional to 72,510, 100,064.07 and 42,316.17

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Solution

The fourth proportional to 72,510, 100,064.07 and 42,316.17 is: 58,396.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,510 : 100,064.07 = 42,316.17 : x
  2. Step 2: Convert to fraction form
    72,510/100,064.07 = 42,316.17/x
  3. Step 3: Cross multiply
    72,510x = 100,064.07 × 42,316.17
  4. Step 4: Simplify right side
    72,510x = 4,234,328,197.01
  5. Step 5: Solve for x
    x = 4,234,328,197.01/72,510
  6. Step 6: Final answer
    x = 58,396.47

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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.