Home / 53,635.20-74,019.80-30,978.32

Finding the Fourth Proportional to 53,635.20, 74,019.80 and 30,978.32

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Solution

The fourth proportional to 53,635.20, 74,019.80 and 30,978.32 is: 42,751.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,635.20 : 74,019.80 = 30,978.32 : x
  2. Step 2: Convert to fraction form
    53,635.20/74,019.80 = 30,978.32/x
  3. Step 3: Cross multiply
    53,635.20x = 74,019.80 × 30,978.32
  4. Step 4: Simplify right side
    53,635.20x = 2,293,009,050.74
  5. Step 5: Solve for x
    x = 2,293,009,050.74/53,635.20
  6. Step 6: Final answer
    x = 42,751.94

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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.