Home / 66,229.20-99,343.80-42,609.60

Finding the Fourth Proportional to 66,229.20, 99,343.80 and 42,609.60

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Solution

The fourth proportional to 66,229.20, 99,343.80 and 42,609.60 is: 63,914.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,229.20 : 99,343.80 = 42,609.60 : x
  2. Step 2: Convert to fraction form
    66,229.20/99,343.80 = 42,609.60/x
  3. Step 3: Cross multiply
    66,229.20x = 99,343.80 × 42,609.60
  4. Step 4: Simplify right side
    66,229.20x = 4,232,999,580.48
  5. Step 5: Solve for x
    x = 4,232,999,580.48/66,229.20
  6. Step 6: Final answer
    x = 63,914.40

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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.