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Finding the Fourth Proportional to 66,903.72, 92,352.42 and 57,434.28

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Solution

The fourth proportional to 66,903.72, 92,352.42 and 57,434.28 is: 79,281.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,903.72 : 92,352.42 = 57,434.28 : x
  2. Step 2: Convert to fraction form
    66,903.72/92,352.42 = 57,434.28/x
  3. Step 3: Cross multiply
    66,903.72x = 92,352.42 × 57,434.28
  4. Step 4: Simplify right side
    66,903.72x = 5,304,194,748.96
  5. Step 5: Solve for x
    x = 5,304,194,748.96/66,903.72
  6. Step 6: Final answer
    x = 79,281.01

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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.