Home / 45,870.34-68,805.57-12,590.86

Finding the Fourth Proportional to 45,870.34, 68,805.57 and 12,590.86

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Solution

The fourth proportional to 45,870.34, 68,805.57 and 12,590.86 is: 18,886.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,870.34 : 68,805.57 = 12,590.86 : x
  2. Step 2: Convert to fraction form
    45,870.34/68,805.57 = 12,590.86/x
  3. Step 3: Cross multiply
    45,870.34x = 68,805.57 × 12,590.86
  4. Step 4: Simplify right side
    45,870.34x = 866,321,299.09
  5. Step 5: Solve for x
    x = 866,321,299.09/45,870.34
  6. Step 6: Final answer
    x = 18,886.31

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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.