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Finding the Fourth Proportional to 74,392.32, 111,588.48 and 18,988.32

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Solution

The fourth proportional to 74,392.32, 111,588.48 and 18,988.32 is: 28,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,392.32 : 111,588.48 = 18,988.32 : x
  2. Step 2: Convert to fraction form
    74,392.32/111,588.48 = 18,988.32/x
  3. Step 3: Cross multiply
    74,392.32x = 111,588.48 × 18,988.32
  4. Step 4: Simplify right side
    74,392.32x = 2,118,877,766.55
  5. Step 5: Solve for x
    x = 2,118,877,766.55/74,392.32
  6. Step 6: Final answer
    x = 28,482.48

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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.