Home / 74,001.03-102,121.40-40,009.51

Finding the Fourth Proportional to 74,001.03, 102,121.40 and 40,009.51

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Solution

The fourth proportional to 74,001.03, 102,121.40 and 40,009.51 is: 55,213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,001.03 : 102,121.40 = 40,009.51 : x
  2. Step 2: Convert to fraction form
    74,001.03/102,121.40 = 40,009.51/x
  3. Step 3: Cross multiply
    74,001.03x = 102,121.40 × 40,009.51
  4. Step 4: Simplify right side
    74,001.03x = 4,085,827,716.06
  5. Step 5: Solve for x
    x = 4,085,827,716.06/74,001.03
  6. Step 6: Final answer
    x = 55,213.12

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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.