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Finding the Fourth Proportional to 101,277.93, 139,763.55 and 56,565.93

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Solution

The fourth proportional to 101,277.93, 139,763.55 and 56,565.93 is: 78,060.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,277.93 : 139,763.55 = 56,565.93 : x
  2. Step 2: Convert to fraction form
    101,277.93/139,763.55 = 56,565.93/x
  3. Step 3: Cross multiply
    101,277.93x = 139,763.55 × 56,565.93
  4. Step 4: Simplify right side
    101,277.93x = 7,905,855,185.85
  5. Step 5: Solve for x
    x = 7,905,855,185.85/101,277.93
  6. Step 6: Final answer
    x = 78,060.99

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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.