Home / 72,578,000.40-108,867,000.60-66,783,325.20

Finding the Fourth Proportional to 72,578,000.40, 108,867,000.60 and 66,783,325.20

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Solution

The fourth proportional to 72,578,000.40, 108,867,000.60 and 66,783,325.20 is: 100,174,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,578,000.40 : 108,867,000.60 = 66,783,325.20 : x
  2. Step 2: Convert to fraction form
    72,578,000.40/108,867,000.60 = 66,783,325.20/x
  3. Step 3: Cross multiply
    72,578,000.40x = 108,867,000.60 × 66,783,325.20
  4. Step 4: Simplify right side
    72,578,000.40x = 7,270,500,304,618,395
  5. Step 5: Solve for x
    x = 7,270,500,304,618,395/72,578,000.40
  6. Step 6: Final answer
    x = 100,174,987.80

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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.