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Finding the Fourth Proportional to 74,220.40, 111,319.80 and 21,624.40

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Solution

The fourth proportional to 74,220.40, 111,319.80 and 21,624.40 is: 32,433.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,220.40 : 111,319.80 = 21,624.40 : x
  2. Step 2: Convert to fraction form
    74,220.40/111,319.80 = 21,624.40/x
  3. Step 3: Cross multiply
    74,220.40x = 111,319.80 × 21,624.40
  4. Step 4: Simplify right side
    74,220.40x = 2,407,223,883.12
  5. Step 5: Solve for x
    x = 2,407,223,883.12/74,220.40
  6. Step 6: Final answer
    x = 32,433.45

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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.