Home / 72,946.55-100,749.27-49,031.70

Finding the Fourth Proportional to 72,946.55, 100,749.27 and 49,031.70

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Solution

The fourth proportional to 72,946.55, 100,749.27 and 49,031.70 is: 67,719.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,946.55 : 100,749.27 = 49,031.70 : x
  2. Step 2: Convert to fraction form
    72,946.55/100,749.27 = 49,031.70/x
  3. Step 3: Cross multiply
    72,946.55x = 100,749.27 × 49,031.70
  4. Step 4: Simplify right side
    72,946.55x = 4,939,908,479.73
  5. Step 5: Solve for x
    x = 4,939,908,479.73/72,946.55
  6. Step 6: Final answer
    x = 67,719.56

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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.