Home / 81,886.31-122,632.63-46,719.35

Finding the Fourth Proportional to 81,886.31, 122,632.63 and 46,719.35

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Solution

The fourth proportional to 81,886.31, 122,632.63 and 46,719.35 is: 69,966.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,886.31 : 122,632.63 = 46,719.35 : x
  2. Step 2: Convert to fraction form
    81,886.31/122,632.63 = 46,719.35/x
  3. Step 3: Cross multiply
    81,886.31x = 122,632.63 × 46,719.35
  4. Step 4: Simplify right side
    81,886.31x = 5,729,316,339.01
  5. Step 5: Solve for x
    x = 5,729,316,339.01/81,886.31
  6. Step 6: Final answer
    x = 69,966.72

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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.