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Finding the Fourth Proportional to 85,955.52, 128,916 and 23,617.92

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Solution

The fourth proportional to 85,955.52, 128,916 and 23,617.92 is: 35,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,955.52 : 128,916 = 23,617.92 : x
  2. Step 2: Convert to fraction form
    85,955.52/128,916 = 23,617.92/x
  3. Step 3: Cross multiply
    85,955.52x = 128,916 × 23,617.92
  4. Step 4: Simplify right side
    85,955.52x = 3,044,727,774.72
  5. Step 5: Solve for x
    x = 3,044,727,774.72/85,955.52
  6. Step 6: Final answer
    x = 35,422.13

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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.