Home / 85,477.10-128,215.65-41,190.35

Finding the Fourth Proportional to 85,477.10, 128,215.65 and 41,190.35

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Solution

The fourth proportional to 85,477.10, 128,215.65 and 41,190.35 is: 61,785.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,477.10 : 128,215.65 = 41,190.35 : x
  2. Step 2: Convert to fraction form
    85,477.10/128,215.65 = 41,190.35/x
  3. Step 3: Cross multiply
    85,477.10x = 128,215.65 × 41,190.35
  4. Step 4: Simplify right side
    85,477.10x = 5,281,247,498.98
  5. Step 5: Solve for x
    x = 5,281,247,498.98/85,477.10
  6. Step 6: Final answer
    x = 61,785.53

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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.