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Finding the Fourth Proportional to 85,862.66, 128,779.40 and 22,683.47

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Solution

The fourth proportional to 85,862.66, 128,779.40 and 22,683.47 is: 34,021.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,862.66 : 128,779.40 = 22,683.47 : x
  2. Step 2: Convert to fraction form
    85,862.66/128,779.40 = 22,683.47/x
  3. Step 3: Cross multiply
    85,862.66x = 128,779.40 × 22,683.47
  4. Step 4: Simplify right side
    85,862.66x = 2,921,162,899.20
  5. Step 5: Solve for x
    x = 2,921,162,899.20/85,862.66
  6. Step 6: Final answer
    x = 34,021.34

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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.