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Finding the Fourth Proportional to 45,782.57, 68,779.35 and 43,890.89

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Solution

The fourth proportional to 45,782.57, 68,779.35 and 43,890.89 is: 65,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,782.57 : 68,779.35 = 43,890.89 : x
  2. Step 2: Convert to fraction form
    45,782.57/68,779.35 = 43,890.89/x
  3. Step 3: Cross multiply
    45,782.57x = 68,779.35 × 43,890.89
  4. Step 4: Simplify right side
    45,782.57x = 3,018,786,541.22
  5. Step 5: Solve for x
    x = 3,018,786,541.22/45,782.57
  6. Step 6: Final answer
    x = 65,937.47

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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.