Home / 85,464.69-128,209.18-26,305.29

Finding the Fourth Proportional to 85,464.69, 128,209.18 and 26,305.29

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Solution

The fourth proportional to 85,464.69, 128,209.18 and 26,305.29 is: 39,461.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,464.69 : 128,209.18 = 26,305.29 : x
  2. Step 2: Convert to fraction form
    85,464.69/128,209.18 = 26,305.29/x
  3. Step 3: Cross multiply
    85,464.69x = 128,209.18 × 26,305.29
  4. Step 4: Simplify right side
    85,464.69x = 3,372,578,887.99
  5. Step 5: Solve for x
    x = 3,372,578,887.99/85,464.69
  6. Step 6: Final answer
    x = 39,461.67

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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.