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Finding the Fourth Proportional to 67,899.40, 101,635.88 and 42,852.80

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Solution

The fourth proportional to 67,899.40, 101,635.88 and 42,852.80 is: 64,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,899.40 : 101,635.88 = 42,852.80 : x
  2. Step 2: Convert to fraction form
    67,899.40/101,635.88 = 42,852.80/x
  3. Step 3: Cross multiply
    67,899.40x = 101,635.88 × 42,852.80
  4. Step 4: Simplify right side
    67,899.40x = 4,355,382,038.46
  5. Step 5: Solve for x
    x = 4,355,382,038.46/67,899.40
  6. Step 6: Final answer
    x = 64,144.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.