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Finding the Fourth Proportional to 64,779.98, 89,397.52 and 36,486.68

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Solution

The fourth proportional to 64,779.98, 89,397.52 and 36,486.68 is: 50,352.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,779.98 : 89,397.52 = 36,486.68 : x
  2. Step 2: Convert to fraction form
    64,779.98/89,397.52 = 36,486.68/x
  3. Step 3: Cross multiply
    64,779.98x = 89,397.52 × 36,486.68
  4. Step 4: Simplify right side
    64,779.98x = 3,261,818,705.03
  5. Step 5: Solve for x
    x = 3,261,818,705.03/64,779.98
  6. Step 6: Final answer
    x = 50,352.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.