Home / 55,789.13-76,989.60-30,638.63

Finding the Fourth Proportional to 55,789.13, 76,989.60 and 30,638.63

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Solution

The fourth proportional to 55,789.13, 76,989.60 and 30,638.63 is: 42,281.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,789.13 : 76,989.60 = 30,638.63 : x
  2. Step 2: Convert to fraction form
    55,789.13/76,989.60 = 30,638.63/x
  3. Step 3: Cross multiply
    55,789.13x = 76,989.60 × 30,638.63
  4. Step 4: Simplify right side
    55,789.13x = 2,358,855,483.30
  5. Step 5: Solve for x
    x = 2,358,855,483.30/55,789.13
  6. Step 6: Final answer
    x = 42,281.64

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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.