Home / 30,123.20-45,142.56-25,657.60

Finding the Fourth Proportional to 30,123.20, 45,142.56 and 25,657.60

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Solution

The fourth proportional to 30,123.20, 45,142.56 and 25,657.60 is: 38,450.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,123.20 : 45,142.56 = 25,657.60 : x
  2. Step 2: Convert to fraction form
    30,123.20/45,142.56 = 25,657.60/x
  3. Step 3: Cross multiply
    30,123.20x = 45,142.56 × 25,657.60
  4. Step 4: Simplify right side
    30,123.20x = 1,158,249,747.46
  5. Step 5: Solve for x
    x = 1,158,249,747.46/30,123.20
  6. Step 6: Final answer
    x = 38,450.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.