Home / 55,642.62-76,784.31-30,491.58

Finding the Fourth Proportional to 55,642.62, 76,784.31 and 30,491.58

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Solution

The fourth proportional to 55,642.62, 76,784.31 and 30,491.58 is: 42,077.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,642.62 : 76,784.31 = 30,491.58 : x
  2. Step 2: Convert to fraction form
    55,642.62/76,784.31 = 30,491.58/x
  3. Step 3: Cross multiply
    55,642.62x = 76,784.31 × 30,491.58
  4. Step 4: Simplify right side
    55,642.62x = 2,341,274,931.11
  5. Step 5: Solve for x
    x = 2,341,274,931.11/55,642.62
  6. Step 6: Final answer
    x = 42,077.01

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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.