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Finding the Fourth Proportional to 67,031.40, 100,460.70 and 40,708.20

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Solution

The fourth proportional to 67,031.40, 100,460.70 and 40,708.20 is: 61,009.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,031.40 : 100,460.70 = 40,708.20 : x
  2. Step 2: Convert to fraction form
    67,031.40/100,460.70 = 40,708.20/x
  3. Step 3: Cross multiply
    67,031.40x = 100,460.70 × 40,708.20
  4. Step 4: Simplify right side
    67,031.40x = 4,089,574,267.74
  5. Step 5: Solve for x
    x = 4,089,574,267.74/67,031.40
  6. Step 6: Final answer
    x = 61,009.83

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1.5x scale

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.