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Finding the Fourth Proportional to 85,531, 118,032.96 and 57,304.12

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Solution

The fourth proportional to 85,531, 118,032.96 and 57,304.12 is: 79,079.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,531 : 118,032.96 = 57,304.12 : x
  2. Step 2: Convert to fraction form
    85,531/118,032.96 = 57,304.12/x
  3. Step 3: Cross multiply
    85,531x = 118,032.96 × 57,304.12
  4. Step 4: Simplify right side
    85,531x = 6,763,774,903.80
  5. Step 5: Solve for x
    x = 6,763,774,903.80/85,531
  6. Step 6: Final answer
    x = 79,079.81

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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.