Home / 85,576.08-128,336.80-29,402.64

Finding the Fourth Proportional to 85,576.08, 128,336.80 and 29,402.64

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Solution

The fourth proportional to 85,576.08, 128,336.80 and 29,402.64 is: 44,094.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,576.08 : 128,336.80 = 29,402.64 : x
  2. Step 2: Convert to fraction form
    85,576.08/128,336.80 = 29,402.64/x
  3. Step 3: Cross multiply
    85,576.08x = 128,336.80 × 29,402.64
  4. Step 4: Simplify right side
    85,576.08x = 3,773,440,729.15
  5. Step 5: Solve for x
    x = 3,773,440,729.15/85,576.08
  6. Step 6: Final answer
    x = 44,094.57

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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.