Home / 49,921.19-74,880.35-12,985.19

Finding the Fourth Proportional to 49,921.19, 74,880.35 and 12,985.19

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Solution

The fourth proportional to 49,921.19, 74,880.35 and 12,985.19 is: 19,477.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,921.19 : 74,880.35 = 12,985.19 : x
  2. Step 2: Convert to fraction form
    49,921.19/74,880.35 = 12,985.19/x
  3. Step 3: Cross multiply
    49,921.19x = 74,880.35 × 12,985.19
  4. Step 4: Simplify right side
    49,921.19x = 972,335,507.09
  5. Step 5: Solve for x
    x = 972,335,507.09/49,921.19
  6. Step 6: Final answer
    x = 19,477.41

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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.