Home / 51,376,139.40-77,064,209.10-21,105,726.60

Finding the Fourth Proportional to 51,376,139.40, 77,064,209.10 and 21,105,726.60

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Solution

The fourth proportional to 51,376,139.40, 77,064,209.10 and 21,105,726.60 is: 31,658,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,376,139.40 : 77,064,209.10 = 21,105,726.60 : x
  2. Step 2: Convert to fraction form
    51,376,139.40/77,064,209.10 = 21,105,726.60/x
  3. Step 3: Cross multiply
    51,376,139.40x = 77,064,209.10 × 21,105,726.60
  4. Step 4: Simplify right side
    51,376,139.40x = 1,626,496,127,909,832
  5. Step 5: Solve for x
    x = 1,626,496,127,909,832/51,376,139.40
  6. Step 6: Final answer
    x = 31,658,589.90

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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.