Home / 74,130.83-102,300.37-40,139.33

Finding the Fourth Proportional to 74,130.83, 102,300.37 and 40,139.33

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Solution

The fourth proportional to 74,130.83, 102,300.37 and 40,139.33 is: 55,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,130.83 : 102,300.37 = 40,139.33 : x
  2. Step 2: Convert to fraction form
    74,130.83/102,300.37 = 40,139.33/x
  3. Step 3: Cross multiply
    74,130.83x = 102,300.37 × 40,139.33
  4. Step 4: Simplify right side
    74,130.83x = 4,106,267,698.70
  5. Step 5: Solve for x
    x = 4,106,267,698.70/74,130.83
  6. Step 6: Final answer
    x = 55,392.17

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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.