Home / 85,707.20-128,643.72-41,365.17

Finding the Fourth Proportional to 85,707.20, 128,643.72 and 41,365.17

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Solution

The fourth proportional to 85,707.20, 128,643.72 and 41,365.17 is: 62,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,707.20 : 128,643.72 = 41,365.17 : x
  2. Step 2: Convert to fraction form
    85,707.20/128,643.72 = 41,365.17/x
  3. Step 3: Cross multiply
    85,707.20x = 128,643.72 × 41,365.17
  4. Step 4: Simplify right side
    85,707.20x = 5,321,369,347.23
  5. Step 5: Solve for x
    x = 5,321,369,347.23/85,707.20
  6. Step 6: Final answer
    x = 62,087.77

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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.