Home / 85,697.03-128,515.44-25,707.62

Finding the Fourth Proportional to 85,697.03, 128,515.44 and 25,707.62

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Solution

The fourth proportional to 85,697.03, 128,515.44 and 25,707.62 is: 38,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,697.03 : 128,515.44 = 25,707.62 : x
  2. Step 2: Convert to fraction form
    85,697.03/128,515.44 = 25,707.62/x
  3. Step 3: Cross multiply
    85,697.03x = 128,515.44 × 25,707.62
  4. Step 4: Simplify right side
    85,697.03x = 3,303,826,095.65
  5. Step 5: Solve for x
    x = 3,303,826,095.65/85,697.03
  6. Step 6: Final answer
    x = 38,552.40

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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.