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Finding the Fourth Proportional to 55,793.60, 83,690.40 and 51,516.80

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Solution

The fourth proportional to 55,793.60, 83,690.40 and 51,516.80 is: 77,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,793.60 : 83,690.40 = 51,516.80 : x
  2. Step 2: Convert to fraction form
    55,793.60/83,690.40 = 51,516.80/x
  3. Step 3: Cross multiply
    55,793.60x = 83,690.40 × 51,516.80
  4. Step 4: Simplify right side
    55,793.60x = 4,311,461,598.72
  5. Step 5: Solve for x
    x = 4,311,461,598.72/55,793.60
  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.