Home / 49,987.40-74,981.10-13,051.40

Finding the Fourth Proportional to 49,987.40, 74,981.10 and 13,051.40

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Solution

The fourth proportional to 49,987.40, 74,981.10 and 13,051.40 is: 19,577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,987.40 : 74,981.10 = 13,051.40 : x
  2. Step 2: Convert to fraction form
    49,987.40/74,981.10 = 13,051.40/x
  3. Step 3: Cross multiply
    49,987.40x = 74,981.10 × 13,051.40
  4. Step 4: Simplify right side
    49,987.40x = 978,608,328.54
  5. Step 5: Solve for x
    x = 978,608,328.54/49,987.40
  6. Step 6: Final answer
    x = 19,577.10

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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.