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Finding the Fourth Proportional to 76,661.60, 114,992.40 and 55,925.60

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Solution

The fourth proportional to 76,661.60, 114,992.40 and 55,925.60 is: 83,888.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,661.60 : 114,992.40 = 55,925.60 : x
  2. Step 2: Convert to fraction form
    76,661.60/114,992.40 = 55,925.60/x
  3. Step 3: Cross multiply
    76,661.60x = 114,992.40 × 55,925.60
  4. Step 4: Simplify right side
    76,661.60x = 6,431,018,965.44
  5. Step 5: Solve for x
    x = 6,431,018,965.44/76,661.60
  6. Step 6: Final answer
    x = 83,888.40

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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.