Home / 85,623.04-128,443.20-32,301.64

Finding the Fourth Proportional to 85,623.04, 128,443.20 and 32,301.64

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Solution

The fourth proportional to 85,623.04, 128,443.20 and 32,301.64 is: 48,455.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,623.04 : 128,443.20 = 32,301.64 : x
  2. Step 2: Convert to fraction form
    85,623.04/128,443.20 = 32,301.64/x
  3. Step 3: Cross multiply
    85,623.04x = 128,443.20 × 32,301.64
  4. Step 4: Simplify right side
    85,623.04x = 4,148,926,006.85
  5. Step 5: Solve for x
    x = 4,148,926,006.85/85,623.04
  6. Step 6: Final answer
    x = 48,455.72

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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.