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Finding the Fourth Proportional to 85,594.30, 128,391.50 and 32,271.79

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Solution

The fourth proportional to 85,594.30, 128,391.50 and 32,271.79 is: 48,407.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,594.30 : 128,391.50 = 32,271.79 : x
  2. Step 2: Convert to fraction form
    85,594.30/128,391.50 = 32,271.79/x
  3. Step 3: Cross multiply
    85,594.30x = 128,391.50 × 32,271.79
  4. Step 4: Simplify right side
    85,594.30x = 4,143,423,525.79
  5. Step 5: Solve for x
    x = 4,143,423,525.79/85,594.30
  6. Step 6: Final answer
    x = 48,407.70

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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.