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Finding the Fourth Proportional to 64,779.70, 89,400.63 and 36,101.29

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Solution

The fourth proportional to 64,779.70, 89,400.63 and 36,101.29 is: 49,822.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,779.70 : 89,400.63 = 36,101.29 : x
  2. Step 2: Convert to fraction form
    64,779.70/89,400.63 = 36,101.29/x
  3. Step 3: Cross multiply
    64,779.70x = 89,400.63 × 36,101.29
  4. Step 4: Simplify right side
    64,779.70x = 3,227,478,069.81
  5. Step 5: Solve for x
    x = 3,227,478,069.81/64,779.70
  6. Step 6: Final answer
    x = 49,822.37

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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.