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Finding the Fourth Proportional to 72,652.73, 108,913.08 and 64,779.53

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Solution

The fourth proportional to 72,652.73, 108,913.08 and 64,779.53 is: 97,110.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,652.73 : 108,913.08 = 64,779.53 : x
  2. Step 2: Convert to fraction form
    72,652.73/108,913.08 = 64,779.53/x
  3. Step 3: Cross multiply
    72,652.73x = 108,913.08 × 64,779.53
  4. Step 4: Simplify right side
    72,652.73x = 7,055,338,133.25
  5. Step 5: Solve for x
    x = 7,055,338,133.25/72,652.73
  6. Step 6: Final answer
    x = 97,110.43

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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.