Home / 85,864.72-128,834.16-46,449.58

Finding the Fourth Proportional to 85,864.72, 128,834.16 and 46,449.58

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Solution

The fourth proportional to 85,864.72, 128,834.16 and 46,449.58 is: 69,694.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,864.72 : 128,834.16 = 46,449.58 : x
  2. Step 2: Convert to fraction form
    85,864.72/128,834.16 = 46,449.58/x
  3. Step 3: Cross multiply
    85,864.72x = 128,834.16 × 46,449.58
  4. Step 4: Simplify right side
    85,864.72x = 5,984,292,621.65
  5. Step 5: Solve for x
    x = 5,984,292,621.65/85,864.72
  6. Step 6: Final answer
    x = 69,694.43

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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.