Home / 78,174,199.98-107,893,328.45-43,378,100.51

Finding the Fourth Proportional to 78,174,199.98, 107,893,328.45 and 43,378,100.51

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Solution

The fourth proportional to 78,174,199.98, 107,893,328.45 and 43,378,100.51 is: 59,868,954.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,174,199.98 : 107,893,328.45 = 43,378,100.51 : x
  2. Step 2: Convert to fraction form
    78,174,199.98/107,893,328.45 = 43,378,100.51/x
  3. Step 3: Cross multiply
    78,174,199.98x = 107,893,328.45 × 43,378,100.51
  4. Step 4: Simplify right side
    78,174,199.98x = 4,680,207,645,106,185
  5. Step 5: Solve for x
    x = 4,680,207,645,106,185/78,174,199.98
  6. Step 6: Final answer
    x = 59,868,954.80

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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.