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Finding the Fourth Proportional to 62,215.80, 85,825.07 and 42,079.45

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Solution

The fourth proportional to 62,215.80, 85,825.07 and 42,079.45 is: 58,047.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,215.80 : 85,825.07 = 42,079.45 : x
  2. Step 2: Convert to fraction form
    62,215.80/85,825.07 = 42,079.45/x
  3. Step 3: Cross multiply
    62,215.80x = 85,825.07 × 42,079.45
  4. Step 4: Simplify right side
    62,215.80x = 3,611,471,531.41
  5. Step 5: Solve for x
    x = 3,611,471,531.41/62,215.80
  6. Step 6: Final answer
    x = 58,047.50

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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.