Home / 85,433.52-128,135.16-23,108.88

Finding the Fourth Proportional to 85,433.52, 128,135.16 and 23,108.88

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Solution

The fourth proportional to 85,433.52, 128,135.16 and 23,108.88 is: 34,659.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,433.52 : 128,135.16 = 23,108.88 : x
  2. Step 2: Convert to fraction form
    85,433.52/128,135.16 = 23,108.88/x
  3. Step 3: Cross multiply
    85,433.52x = 128,135.16 × 23,108.88
  4. Step 4: Simplify right side
    85,433.52x = 2,961,060,036.22
  5. Step 5: Solve for x
    x = 2,961,060,036.22/85,433.52
  6. Step 6: Final answer
    x = 34,659.23

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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.