Home / 45,810.40-68,758.80-28,314.40

Finding the Fourth Proportional to 45,810.40, 68,758.80 and 28,314.40

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Solution

The fourth proportional to 45,810.40, 68,758.80 and 28,314.40 is: 42,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,810.40 : 68,758.80 = 28,314.40 : x
  2. Step 2: Convert to fraction form
    45,810.40/68,758.80 = 28,314.40/x
  3. Step 3: Cross multiply
    45,810.40x = 68,758.80 × 28,314.40
  4. Step 4: Simplify right side
    45,810.40x = 1,946,864,166.72
  5. Step 5: Solve for x
    x = 1,946,864,166.72/45,810.40
  6. Step 6: Final answer
    x = 42,498.30

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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.