Home / 77,190.43-115,598.77-53,431.40

Finding the Fourth Proportional to 77,190.43, 115,598.77 and 53,431.40

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Solution

The fourth proportional to 77,190.43, 115,598.77 and 53,431.40 is: 80,017.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,190.43 : 115,598.77 = 53,431.40 : x
  2. Step 2: Convert to fraction form
    77,190.43/115,598.77 = 53,431.40/x
  3. Step 3: Cross multiply
    77,190.43x = 115,598.77 × 53,431.40
  4. Step 4: Simplify right side
    77,190.43x = 6,176,604,119.38
  5. Step 5: Solve for x
    x = 6,176,604,119.38/77,190.43
  6. Step 6: Final answer
    x = 80,017.74

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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.