Home / 80,540.50-111,250.48-61,303.40

Finding the Fourth Proportional to 80,540.50, 111,250.48 and 61,303.40

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Solution

The fourth proportional to 80,540.50, 111,250.48 and 61,303.40 is: 84,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,540.50 : 111,250.48 = 61,303.40 : x
  2. Step 2: Convert to fraction form
    80,540.50/111,250.48 = 61,303.40/x
  3. Step 3: Cross multiply
    80,540.50x = 111,250.48 × 61,303.40
  4. Step 4: Simplify right side
    80,540.50x = 6,820,032,675.63
  5. Step 5: Solve for x
    x = 6,820,032,675.63/80,540.50
  6. Step 6: Final answer
    x = 84,678.30

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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.