Home / 74,988.81-112,427.19-45,399.51

Finding the Fourth Proportional to 74,988.81, 112,427.19 and 45,399.51

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Solution

The fourth proportional to 74,988.81, 112,427.19 and 45,399.51 is: 68,065.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,988.81 : 112,427.19 = 45,399.51 : x
  2. Step 2: Convert to fraction form
    74,988.81/112,427.19 = 45,399.51/x
  3. Step 3: Cross multiply
    74,988.81x = 112,427.19 × 45,399.51
  4. Step 4: Simplify right side
    74,988.81x = 5,104,139,336.68
  5. Step 5: Solve for x
    x = 5,104,139,336.68/74,988.81
  6. Step 6: Final answer
    x = 68,065.35

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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.