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Finding the Fourth Proportional to 85,366.48, 128,047.16 and 23,040.72

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Solution

The fourth proportional to 85,366.48, 128,047.16 and 23,040.72 is: 34,560.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,366.48 : 128,047.16 = 23,040.72 : x
  2. Step 2: Convert to fraction form
    85,366.48/128,047.16 = 23,040.72/x
  3. Step 3: Cross multiply
    85,366.48x = 128,047.16 × 23,040.72
  4. Step 4: Simplify right side
    85,366.48x = 2,950,298,760.36
  5. Step 5: Solve for x
    x = 2,950,298,760.36/85,366.48
  6. Step 6: Final answer
    x = 34,560.39

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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.