Home / 100,017.30-138,036.93-57,577.62

Finding the Fourth Proportional to 100,017.30, 138,036.93 and 57,577.62

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Solution

The fourth proportional to 100,017.30, 138,036.93 and 57,577.62 is: 79,464.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,017.30 : 138,036.93 = 57,577.62 : x
  2. Step 2: Convert to fraction form
    100,017.30/138,036.93 = 57,577.62/x
  3. Step 3: Cross multiply
    100,017.30x = 138,036.93 × 57,577.62
  4. Step 4: Simplify right side
    100,017.30x = 7,947,837,901.51
  5. Step 5: Solve for x
    x = 7,947,837,901.51/100,017.30
  6. Step 6: Final answer
    x = 79,464.63

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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.