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Finding the Fourth Proportional to 77,898.62, 107,588.76 and 52,360.64

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Solution

The fourth proportional to 77,898.62, 107,588.76 and 52,360.64 is: 72,317.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,898.62 : 107,588.76 = 52,360.64 : x
  2. Step 2: Convert to fraction form
    77,898.62/107,588.76 = 52,360.64/x
  3. Step 3: Cross multiply
    77,898.62x = 107,588.76 × 52,360.64
  4. Step 4: Simplify right side
    77,898.62x = 5,633,416,599.38
  5. Step 5: Solve for x
    x = 5,633,416,599.38/77,898.62
  6. Step 6: Final answer
    x = 72,317.29

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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.