Home / 74,017.20-111,043.60-21,430.32

Finding the Fourth Proportional to 74,017.20, 111,043.60 and 21,430.32

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Solution

The fourth proportional to 74,017.20, 111,043.60 and 21,430.32 is: 32,150.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,017.20 : 111,043.60 = 21,430.32 : x
  2. Step 2: Convert to fraction form
    74,017.20/111,043.60 = 21,430.32/x
  3. Step 3: Cross multiply
    74,017.20x = 111,043.60 × 21,430.32
  4. Step 4: Simplify right side
    74,017.20x = 2,379,699,881.95
  5. Step 5: Solve for x
    x = 2,379,699,881.95/74,017.20
  6. Step 6: Final answer
    x = 32,150.63

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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.