Home / 81,465,809.40-122,198,714.10-77,686,673.40

Finding the Fourth Proportional to 81,465,809.40, 122,198,714.10 and 77,686,673.40

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Solution

The fourth proportional to 81,465,809.40, 122,198,714.10 and 77,686,673.40 is: 116,530,010.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,809.40 : 122,198,714.10 = 77,686,673.40 : x
  2. Step 2: Convert to fraction form
    81,465,809.40/122,198,714.10 = 77,686,673.40/x
  3. Step 3: Cross multiply
    81,465,809.40x = 122,198,714.10 × 77,686,673.40
  4. Step 4: Simplify right side
    81,465,809.40x = 9,493,211,592,186,676
  5. Step 5: Solve for x
    x = 9,493,211,592,186,676/81,465,809.40
  6. Step 6: Final answer
    x = 116,530,010.10

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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.