Home / 66,128,523.40-99,015,837.90-42,063,704.20

Finding the Fourth Proportional to 66,128,523.40, 99,015,837.90 and 42,063,704.20

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Solution

The fourth proportional to 66,128,523.40, 99,015,837.90 and 42,063,704.20 is: 62,983,001.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,128,523.40 : 99,015,837.90 = 42,063,704.20 : x
  2. Step 2: Convert to fraction form
    66,128,523.40/99,015,837.90 = 42,063,704.20/x
  3. Step 3: Cross multiply
    66,128,523.40x = 99,015,837.90 × 42,063,704.20
  4. Step 4: Simplify right side
    66,128,523.40x = 4,164,972,916,540,749.50
  5. Step 5: Solve for x
    x = 4,164,972,916,540,749.50/66,128,523.40
  6. Step 6: Final answer
    x = 62,983,001.92

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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.