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Finding the Fourth Proportional to 74,225.80, 111,597.90 and 72,670.60

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Solution

The fourth proportional to 74,225.80, 111,597.90 and 72,670.60 is: 109,259.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,225.80 : 111,597.90 = 72,670.60 : x
  2. Step 2: Convert to fraction form
    74,225.80/111,597.90 = 72,670.60/x
  3. Step 3: Cross multiply
    74,225.80x = 111,597.90 × 72,670.60
  4. Step 4: Simplify right side
    74,225.80x = 8,109,886,351.74
  5. Step 5: Solve for x
    x = 8,109,886,351.74/74,225.80
  6. Step 6: Final answer
    x = 109,259.67

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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.