Home / 77,817,137.69-107,388,070.50-42,534,991.37

Finding the Fourth Proportional to 77,817,137.69, 107,388,070.50 and 42,534,991.37

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Solution

The fourth proportional to 77,817,137.69, 107,388,070.50 and 42,534,991.37 is: 58,698,517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,817,137.69 : 107,388,070.50 = 42,534,991.37 : x
  2. Step 2: Convert to fraction form
    77,817,137.69/107,388,070.50 = 42,534,991.37/x
  3. Step 3: Cross multiply
    77,817,137.69x = 107,388,070.50 × 42,534,991.37
  4. Step 4: Simplify right side
    77,817,137.69x = 4,567,750,651,421,511
  5. Step 5: Solve for x
    x = 4,567,750,651,421,511/77,817,137.69
  6. Step 6: Final answer
    x = 58,698,517.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.