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Finding the Fourth Proportional to 99,765.64, 149,657.68 and 39,779.64

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Solution

The fourth proportional to 99,765.64, 149,657.68 and 39,779.64 is: 59,673.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,765.64 : 149,657.68 = 39,779.64 : x
  2. Step 2: Convert to fraction form
    99,765.64/149,657.68 = 39,779.64/x
  3. Step 3: Cross multiply
    99,765.64x = 149,657.68 × 39,779.64
  4. Step 4: Simplify right side
    99,765.64x = 5,953,328,683.36
  5. Step 5: Solve for x
    x = 5,953,328,683.36/99,765.64
  6. Step 6: Final answer
    x = 59,673.14

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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.