Home / 55,022.49-75,930.30-31,148.55

Finding the Fourth Proportional to 55,022.49, 75,930.30 and 31,148.55

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Solution

The fourth proportional to 55,022.49, 75,930.30 and 31,148.55 is: 42,984.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,022.49 : 75,930.30 = 31,148.55 : x
  2. Step 2: Convert to fraction form
    55,022.49/75,930.30 = 31,148.55/x
  3. Step 3: Cross multiply
    55,022.49x = 75,930.30 × 31,148.55
  4. Step 4: Simplify right side
    55,022.49x = 2,365,118,746.07
  5. Step 5: Solve for x
    x = 2,365,118,746.07/55,022.49
  6. Step 6: Final answer
    x = 42,984.58

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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.