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Finding the Fourth Proportional to 53,289.40, 79,934.10 and 51,014.20

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Solution

The fourth proportional to 53,289.40, 79,934.10 and 51,014.20 is: 76,521.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,289.40 : 79,934.10 = 51,014.20 : x
  2. Step 2: Convert to fraction form
    53,289.40/79,934.10 = 51,014.20/x
  3. Step 3: Cross multiply
    53,289.40x = 79,934.10 × 51,014.20
  4. Step 4: Simplify right side
    53,289.40x = 4,077,774,164.22
  5. Step 5: Solve for x
    x = 4,077,774,164.22/53,289.40
  6. Step 6: Final answer
    x = 76,521.30

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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.