Home / 51,440.16-70,988.76-28,778.40

Finding the Fourth Proportional to 51,440.16, 70,988.76 and 28,778.40

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Solution

The fourth proportional to 51,440.16, 70,988.76 and 28,778.40 is: 39,714.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,440.16 : 70,988.76 = 28,778.40 : x
  2. Step 2: Convert to fraction form
    51,440.16/70,988.76 = 28,778.40/x
  3. Step 3: Cross multiply
    51,440.16x = 70,988.76 × 28,778.40
  4. Step 4: Simplify right side
    51,440.16x = 2,042,942,930.78
  5. Step 5: Solve for x
    x = 2,042,942,930.78/51,440.16
  6. Step 6: Final answer
    x = 39,714.94

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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.