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Finding the Fourth Proportional to 85,086.88, 117,425.16 and 70,915.12

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Solution

The fourth proportional to 85,086.88, 117,425.16 and 70,915.12 is: 97,867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,086.88 : 117,425.16 = 70,915.12 : x
  2. Step 2: Convert to fraction form
    85,086.88/117,425.16 = 70,915.12/x
  3. Step 3: Cross multiply
    85,086.88x = 117,425.16 × 70,915.12
  4. Step 4: Simplify right side
    85,086.88x = 8,327,219,312.42
  5. Step 5: Solve for x
    x = 8,327,219,312.42/85,086.88
  6. Step 6: Final answer
    x = 97,867.25

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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.