Home / 85,934.10-128,748.66-35,904.12

Finding the Fourth Proportional to 85,934.10, 128,748.66 and 35,904.12

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Solution

The fourth proportional to 85,934.10, 128,748.66 and 35,904.12 is: 53,792.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934.10 : 128,748.66 = 35,904.12 : x
  2. Step 2: Convert to fraction form
    85,934.10/128,748.66 = 35,904.12/x
  3. Step 3: Cross multiply
    85,934.10x = 128,748.66 × 35,904.12
  4. Step 4: Simplify right side
    85,934.10x = 4,622,607,338.48
  5. Step 5: Solve for x
    x = 4,622,607,338.48/85,934.10
  6. Step 6: Final answer
    x = 53,792.47

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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.