Home / 51,036.90-70,434.10-28,380.95

Finding the Fourth Proportional to 51,036.90, 70,434.10 and 28,380.95

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Solution

The fourth proportional to 51,036.90, 70,434.10 and 28,380.95 is: 39,167.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,036.90 : 70,434.10 = 28,380.95 : x
  2. Step 2: Convert to fraction form
    51,036.90/70,434.10 = 28,380.95/x
  3. Step 3: Cross multiply
    51,036.90x = 70,434.10 × 28,380.95
  4. Step 4: Simplify right side
    51,036.90x = 1,998,986,670.40
  5. Step 5: Solve for x
    x = 1,998,986,670.40/51,036.90
  6. Step 6: Final answer
    x = 39,167.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.