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Finding the Fourth Proportional to 67,885.76, 101,708.16 and 28,355.88

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Solution

The fourth proportional to 67,885.76, 101,708.16 and 28,355.88 is: 42,483.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,885.76 : 101,708.16 = 28,355.88 : x
  2. Step 2: Convert to fraction form
    67,885.76/101,708.16 = 28,355.88/x
  3. Step 3: Cross multiply
    67,885.76x = 101,708.16 × 28,355.88
  4. Step 4: Simplify right side
    67,885.76x = 2,884,024,379.98
  5. Step 5: Solve for x
    x = 2,884,024,379.98/67,885.76
  6. Step 6: Final answer
    x = 42,483.50

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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.