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Finding the Fourth Proportional to 101,745.95, 140,409.39 and 56,430.86

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Solution

The fourth proportional to 101,745.95, 140,409.39 and 56,430.86 is: 77,874.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,745.95 : 140,409.39 = 56,430.86 : x
  2. Step 2: Convert to fraction form
    101,745.95/140,409.39 = 56,430.86/x
  3. Step 3: Cross multiply
    101,745.95x = 140,409.39 × 56,430.86
  4. Step 4: Simplify right side
    101,745.95x = 7,923,421,927.73
  5. Step 5: Solve for x
    x = 7,923,421,927.73/101,745.95
  6. Step 6: Final answer
    x = 77,874.57

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1.5x scale

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.