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Finding the Fourth Proportional to 69,821.61, 96,353.70 and 37,990.34

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Solution

The fourth proportional to 69,821.61, 96,353.70 and 37,990.34 is: 52,426.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,821.61 : 96,353.70 = 37,990.34 : x
  2. Step 2: Convert to fraction form
    69,821.61/96,353.70 = 37,990.34/x
  3. Step 3: Cross multiply
    69,821.61x = 96,353.70 × 37,990.34
  4. Step 4: Simplify right side
    69,821.61x = 3,660,509,341.49
  5. Step 5: Solve for x
    x = 3,660,509,341.49/69,821.61
  6. Step 6: Final answer
    x = 52,426.60

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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.