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Finding the Fourth Proportional to 67,877.40, 101,864.70 and 28,462.80

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Solution

The fourth proportional to 67,877.40, 101,864.70 and 28,462.80 is: 42,714.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,877.40 : 101,864.70 = 28,462.80 : x
  2. Step 2: Convert to fraction form
    67,877.40/101,864.70 = 28,462.80/x
  3. Step 3: Cross multiply
    67,877.40x = 101,864.70 × 28,462.80
  4. Step 4: Simplify right side
    67,877.40x = 2,899,354,583.16
  5. Step 5: Solve for x
    x = 2,899,354,583.16/67,877.40
  6. Step 6: Final answer
    x = 42,714.58

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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.