Home / 85,961.52-128,925-23,623.92

Finding the Fourth Proportional to 85,961.52, 128,925 and 23,623.92

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Solution

The fourth proportional to 85,961.52, 128,925 and 23,623.92 is: 35,431.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,961.52 : 128,925 = 23,623.92 : x
  2. Step 2: Convert to fraction form
    85,961.52/128,925 = 23,623.92/x
  3. Step 3: Cross multiply
    85,961.52x = 128,925 × 23,623.92
  4. Step 4: Simplify right side
    85,961.52x = 3,045,713,886
  5. Step 5: Solve for x
    x = 3,045,713,886/85,961.52
  6. Step 6: Final answer
    x = 35,431.13

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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.