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Finding the Fourth Proportional to 52,553.60, 78,830.40 and 51,516.80

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Solution

The fourth proportional to 52,553.60, 78,830.40 and 51,516.80 is: 77,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,553.60 : 78,830.40 = 51,516.80 : x
  2. Step 2: Convert to fraction form
    52,553.60/78,830.40 = 51,516.80/x
  3. Step 3: Cross multiply
    52,553.60x = 78,830.40 × 51,516.80
  4. Step 4: Simplify right side
    52,553.60x = 4,061,089,950.72
  5. Step 5: Solve for x
    x = 4,061,089,950.72/52,553.60
  6. Step 6: Final answer
    x = 77,275.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.