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Finding the Fourth Proportional to 67,635.53, 93,366.93 and 40,421.22

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Solution

The fourth proportional to 67,635.53, 93,366.93 and 40,421.22 is: 55,799.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,635.53 : 93,366.93 = 40,421.22 : x
  2. Step 2: Convert to fraction form
    67,635.53/93,366.93 = 40,421.22/x
  3. Step 3: Cross multiply
    67,635.53x = 93,366.93 × 40,421.22
  4. Step 4: Simplify right side
    67,635.53x = 3,774,005,218.25
  5. Step 5: Solve for x
    x = 3,774,005,218.25/67,635.53
  6. Step 6: Final answer
    x = 55,799.15

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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.