Home / 85,736.57-128,542.55-35,830.94

Finding the Fourth Proportional to 85,736.57, 128,542.55 and 35,830.94

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Solution

The fourth proportional to 85,736.57, 128,542.55 and 35,830.94 is: 53,720.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,736.57 : 128,542.55 = 35,830.94 : x
  2. Step 2: Convert to fraction form
    85,736.57/128,542.55 = 35,830.94/x
  3. Step 3: Cross multiply
    85,736.57x = 128,542.55 × 35,830.94
  4. Step 4: Simplify right side
    85,736.57x = 4,605,799,574.63
  5. Step 5: Solve for x
    x = 4,605,799,574.63/85,736.57
  6. Step 6: Final answer
    x = 53,720.37

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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.