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Finding the Fourth Proportional to 85,818.80, 118,429.98 and 52,284.80

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Solution

The fourth proportional to 85,818.80, 118,429.98 and 52,284.80 is: 72,153.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,818.80 : 118,429.98 = 52,284.80 : x
  2. Step 2: Convert to fraction form
    85,818.80/118,429.98 = 52,284.80/x
  3. Step 3: Cross multiply
    85,818.80x = 118,429.98 × 52,284.80
  4. Step 4: Simplify right side
    85,818.80x = 6,192,087,818.30
  5. Step 5: Solve for x
    x = 6,192,087,818.30/85,818.80
  6. Step 6: Final answer
    x = 72,153.05

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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.