Home / 52,104.56-78,156.64-12,661.79

Finding the Fourth Proportional to 52,104.56, 78,156.64 and 12,661.79

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Solution

The fourth proportional to 52,104.56, 78,156.64 and 12,661.79 is: 18,992.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,104.56 : 78,156.64 = 12,661.79 : x
  2. Step 2: Convert to fraction form
    52,104.56/78,156.64 = 12,661.79/x
  3. Step 3: Cross multiply
    52,104.56x = 78,156.64 × 12,661.79
  4. Step 4: Simplify right side
    52,104.56x = 989,602,931.13
  5. Step 5: Solve for x
    x = 989,602,931.13/52,104.56
  6. Step 6: Final answer
    x = 18,992.64

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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.