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Finding the Fourth Proportional to 66,989.84, 92,427.04 and 43,130.34

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Solution

The fourth proportional to 66,989.84, 92,427.04 and 43,130.34 is: 59,507.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,989.84 : 92,427.04 = 43,130.34 : x
  2. Step 2: Convert to fraction form
    66,989.84/92,427.04 = 43,130.34/x
  3. Step 3: Cross multiply
    66,989.84x = 92,427.04 × 43,130.34
  4. Step 4: Simplify right side
    66,989.84x = 3,986,409,660.39
  5. Step 5: Solve for x
    x = 3,986,409,660.39/66,989.84
  6. Step 6: Final answer
    x = 59,507.68

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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.