Home / 55,821.33-77,034.65-30,672.45

Finding the Fourth Proportional to 55,821.33, 77,034.65 and 30,672.45

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Solution

The fourth proportional to 55,821.33, 77,034.65 and 30,672.45 is: 42,328.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,821.33 : 77,034.65 = 30,672.45 : x
  2. Step 2: Convert to fraction form
    55,821.33/77,034.65 = 30,672.45/x
  3. Step 3: Cross multiply
    55,821.33x = 77,034.65 × 30,672.45
  4. Step 4: Simplify right side
    55,821.33x = 2,362,841,297.03
  5. Step 5: Solve for x
    x = 2,362,841,297.03/55,821.33
  6. Step 6: Final answer
    x = 42,328.65

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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.