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Finding the Fourth Proportional to 101,089.48, 139,459.08 and 60,779.92

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Solution

The fourth proportional to 101,089.48, 139,459.08 and 60,779.92 is: 83,849.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,089.48 : 139,459.08 = 60,779.92 : x
  2. Step 2: Convert to fraction form
    101,089.48/139,459.08 = 60,779.92/x
  3. Step 3: Cross multiply
    101,089.48x = 139,459.08 × 60,779.92
  4. Step 4: Simplify right side
    101,089.48x = 8,476,311,725.67
  5. Step 5: Solve for x
    x = 8,476,311,725.67/101,089.48
  6. Step 6: Final answer
    x = 83,849.59

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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.