Home / 85,501.85-128,230.43-25,516.22

Finding the Fourth Proportional to 85,501.85, 128,230.43 and 25,516.22

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Solution

The fourth proportional to 85,501.85, 128,230.43 and 25,516.22 is: 38,267.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.85 : 128,230.43 = 25,516.22 : x
  2. Step 2: Convert to fraction form
    85,501.85/128,230.43 = 25,516.22/x
  3. Step 3: Cross multiply
    85,501.85x = 128,230.43 × 25,516.22
  4. Step 4: Simplify right side
    85,501.85x = 3,271,955,093.84
  5. Step 5: Solve for x
    x = 3,271,955,093.84/85,501.85
  6. Step 6: Final answer
    x = 38,267.65

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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.