Home / 72,946.40-100,749.07-49,031.55

Finding the Fourth Proportional to 72,946.40, 100,749.07 and 49,031.55

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Solution

The fourth proportional to 72,946.40, 100,749.07 and 49,031.55 is: 67,719.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,946.40 : 100,749.07 = 49,031.55 : x
  2. Step 2: Convert to fraction form
    72,946.40/100,749.07 = 49,031.55/x
  3. Step 3: Cross multiply
    72,946.40x = 100,749.07 × 49,031.55
  4. Step 4: Simplify right side
    72,946.40x = 4,939,883,442.65
  5. Step 5: Solve for x
    x = 4,939,883,442.65/72,946.40
  6. Step 6: Final answer
    x = 67,719.36

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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.