Home / 74,043.58-111,015.96-40,779.40

Finding the Fourth Proportional to 74,043.58, 111,015.96 and 40,779.40

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Solution

The fourth proportional to 74,043.58, 111,015.96 and 40,779.40 is: 61,141.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,043.58 : 111,015.96 = 40,779.40 : x
  2. Step 2: Convert to fraction form
    74,043.58/111,015.96 = 40,779.40/x
  3. Step 3: Cross multiply
    74,043.58x = 111,015.96 × 40,779.40
  4. Step 4: Simplify right side
    74,043.58x = 4,527,164,239.22
  5. Step 5: Solve for x
    x = 4,527,164,239.22/74,043.58
  6. Step 6: Final answer
    x = 61,141.89

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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.