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Finding the Fourth Proportional to 85,337.10, 128,110.95 and 53,747.10

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Solution

The fourth proportional to 85,337.10, 128,110.95 and 53,747.10 is: 80,686.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,337.10 : 128,110.95 = 53,747.10 : x
  2. Step 2: Convert to fraction form
    85,337.10/128,110.95 = 53,747.10/x
  3. Step 3: Cross multiply
    85,337.10x = 128,110.95 × 53,747.10
  4. Step 4: Simplify right side
    85,337.10x = 6,885,592,040.75
  5. Step 5: Solve for x
    x = 6,885,592,040.75/85,337.10
  6. Step 6: Final answer
    x = 80,686.97

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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.