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Finding the Fourth Proportional to 66,060.40, 99,090.60 and 42,440.80

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Solution

The fourth proportional to 66,060.40, 99,090.60 and 42,440.80 is: 63,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,060.40 : 99,090.60 = 42,440.80 : x
  2. Step 2: Convert to fraction form
    66,060.40/99,090.60 = 42,440.80/x
  3. Step 3: Cross multiply
    66,060.40x = 99,090.60 × 42,440.80
  4. Step 4: Simplify right side
    66,060.40x = 4,205,484,336.48
  5. Step 5: Solve for x
    x = 4,205,484,336.48/66,060.40
  6. Step 6: Final answer
    x = 63,661.20

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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.