Home / 81,980.37-113,134.23-45,681.87

Finding the Fourth Proportional to 81,980.37, 113,134.23 and 45,681.87

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Solution

The fourth proportional to 81,980.37, 113,134.23 and 45,681.87 is: 63,041.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,980.37 : 113,134.23 = 45,681.87 : x
  2. Step 2: Convert to fraction form
    81,980.37/113,134.23 = 45,681.87/x
  3. Step 3: Cross multiply
    81,980.37x = 113,134.23 × 45,681.87
  4. Step 4: Simplify right side
    81,980.37x = 5,168,183,187.41
  5. Step 5: Solve for x
    x = 5,168,183,187.41/81,980.37
  6. Step 6: Final answer
    x = 63,041.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.