Home / 31,121.80-46,779.90-30,538.60

Finding the Fourth Proportional to 31,121.80, 46,779.90 and 30,538.60

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Solution

The fourth proportional to 31,121.80, 46,779.90 and 30,538.60 is: 45,903.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.80 : 46,779.90 = 30,538.60 : x
  2. Step 2: Convert to fraction form
    31,121.80/46,779.90 = 30,538.60/x
  3. Step 3: Cross multiply
    31,121.80x = 46,779.90 × 30,538.60
  4. Step 4: Simplify right side
    31,121.80x = 1,428,592,654.14
  5. Step 5: Solve for x
    x = 1,428,592,654.14/31,121.80
  6. Step 6: Final answer
    x = 45,903.28

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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.