Home / 86,025.93-128,986.47-38,631.81

Finding the Fourth Proportional to 86,025.93, 128,986.47 and 38,631.81

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Solution

The fourth proportional to 86,025.93, 128,986.47 and 38,631.81 is: 57,924.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,025.93 : 128,986.47 = 38,631.81 : x
  2. Step 2: Convert to fraction form
    86,025.93/128,986.47 = 38,631.81/x
  3. Step 3: Cross multiply
    86,025.93x = 128,986.47 × 38,631.81
  4. Step 4: Simplify right side
    86,025.93x = 4,982,980,801.61
  5. Step 5: Solve for x
    x = 4,982,980,801.61/86,025.93
  6. Step 6: Final answer
    x = 57,924.17

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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.