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Finding the Fourth Proportional to 85,492.56, 128,253.52 and 38,124.48

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Solution

The fourth proportional to 85,492.56, 128,253.52 and 38,124.48 is: 57,193.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,492.56 : 128,253.52 = 38,124.48 : x
  2. Step 2: Convert to fraction form
    85,492.56/128,253.52 = 38,124.48/x
  3. Step 3: Cross multiply
    85,492.56x = 128,253.52 × 38,124.48
  4. Step 4: Simplify right side
    85,492.56x = 4,889,598,758.17
  5. Step 5: Solve for x
    x = 4,889,598,758.17/85,492.56
  6. Step 6: Final answer
    x = 57,193.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.