Home / 85,590.16-128,338.24-26,409.44

Finding the Fourth Proportional to 85,590.16, 128,338.24 and 26,409.44

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Solution

The fourth proportional to 85,590.16, 128,338.24 and 26,409.44 is: 39,599.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,590.16 : 128,338.24 = 26,409.44 : x
  2. Step 2: Convert to fraction form
    85,590.16/128,338.24 = 26,409.44/x
  3. Step 3: Cross multiply
    85,590.16x = 128,338.24 × 26,409.44
  4. Step 4: Simplify right side
    85,590.16x = 3,389,341,048.99
  5. Step 5: Solve for x
    x = 3,389,341,048.99/85,590.16
  6. Step 6: Final answer
    x = 39,599.66

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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.