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Finding the Fourth Proportional to 85,576.80, 128,192.40 and 48,597.60

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Solution

The fourth proportional to 85,576.80, 128,192.40 and 48,597.60 is: 72,798.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,576.80 : 128,192.40 = 48,597.60 : x
  2. Step 2: Convert to fraction form
    85,576.80/128,192.40 = 48,597.60/x
  3. Step 3: Cross multiply
    85,576.80x = 128,192.40 × 48,597.60
  4. Step 4: Simplify right side
    85,576.80x = 6,229,842,978.24
  5. Step 5: Solve for x
    x = 6,229,842,978.24/85,576.80
  6. Step 6: Final answer
    x = 72,798.27

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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.