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Finding the Fourth Proportional to 77,757.65, 107,155.73 and 56,503.25

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Solution

The fourth proportional to 77,757.65, 107,155.73 and 56,503.25 is: 77,865.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,757.65 : 107,155.73 = 56,503.25 : x
  2. Step 2: Convert to fraction form
    77,757.65/107,155.73 = 56,503.25/x
  3. Step 3: Cross multiply
    77,757.65x = 107,155.73 × 56,503.25
  4. Step 4: Simplify right side
    77,757.65x = 6,054,646,182.83
  5. Step 5: Solve for x
    x = 6,054,646,182.83/77,757.65
  6. Step 6: Final answer
    x = 77,865.61

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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.