Home / 77,069,415.50-115,604,509.62-19,561,703.78

Finding the Fourth Proportional to 77,069,415.50, 115,604,509.62 and 19,561,703.78

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Solution

The fourth proportional to 77,069,415.50, 115,604,509.62 and 19,561,703.78 is: 29,342,653.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,069,415.50 : 115,604,509.62 = 19,561,703.78 : x
  2. Step 2: Convert to fraction form
    77,069,415.50/115,604,509.62 = 19,561,703.78/x
  3. Step 3: Cross multiply
    77,069,415.50x = 115,604,509.62 × 19,561,703.78
  4. Step 4: Simplify right side
    77,069,415.50x = 2,261,421,172,818,600.50
  5. Step 5: Solve for x
    x = 2,261,421,172,818,600.50/77,069,415.50
  6. Step 6: Final answer
    x = 29,342,653.74

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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.