Home / 84,082,021.20-126,123,031.80-30,234,776.40

Finding the Fourth Proportional to 84,082,021.20, 126,123,031.80 and 30,234,776.40

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Solution

The fourth proportional to 84,082,021.20, 126,123,031.80 and 30,234,776.40 is: 45,352,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,082,021.20 : 126,123,031.80 = 30,234,776.40 : x
  2. Step 2: Convert to fraction form
    84,082,021.20/126,123,031.80 = 30,234,776.40/x
  3. Step 3: Cross multiply
    84,082,021.20x = 126,123,031.80 × 30,234,776.40
  4. Step 4: Simplify right side
    84,082,021.20x = 3,813,301,665,363,089
  5. Step 5: Solve for x
    x = 3,813,301,665,363,089/84,082,021.20
  6. Step 6: Final answer
    x = 45,352,164.60

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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.