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Finding the Fourth Proportional to 51,965.28, 77,920.16 and 26,980.16

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Solution

The fourth proportional to 51,965.28, 77,920.16 and 26,980.16 is: 40,455.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,965.28 : 77,920.16 = 26,980.16 : x
  2. Step 2: Convert to fraction form
    51,965.28/77,920.16 = 26,980.16/x
  3. Step 3: Cross multiply
    51,965.28x = 77,920.16 × 26,980.16
  4. Step 4: Simplify right side
    51,965.28x = 2,102,298,384.03
  5. Step 5: Solve for x
    x = 2,102,298,384.03/51,965.28
  6. Step 6: Final answer
    x = 40,455.83

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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.