Home / 85,436.10-128,259.45-53,846.10

Finding the Fourth Proportional to 85,436.10, 128,259.45 and 53,846.10

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Solution

The fourth proportional to 85,436.10, 128,259.45 and 53,846.10 is: 80,835.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,436.10 : 128,259.45 = 53,846.10 : x
  2. Step 2: Convert to fraction form
    85,436.10/128,259.45 = 53,846.10/x
  3. Step 3: Cross multiply
    85,436.10x = 128,259.45 × 53,846.10
  4. Step 4: Simplify right side
    85,436.10x = 6,906,271,170.65
  5. Step 5: Solve for x
    x = 6,906,271,170.65/85,436.10
  6. Step 6: Final answer
    x = 80,835.52

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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.