Home / 45,870.81-68,805.60-12,590.84

Finding the Fourth Proportional to 45,870.81, 68,805.60 and 12,590.84

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Solution

The fourth proportional to 45,870.81, 68,805.60 and 12,590.84 is: 18,886.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,870.81 : 68,805.60 = 12,590.84 : x
  2. Step 2: Convert to fraction form
    45,870.81/68,805.60 = 12,590.84/x
  3. Step 3: Cross multiply
    45,870.81x = 68,805.60 × 12,590.84
  4. Step 4: Simplify right side
    45,870.81x = 866,319,956.68
  5. Step 5: Solve for x
    x = 866,319,956.68/45,870.81
  6. Step 6: Final answer
    x = 18,886.08

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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.