Home / 78,265,707.96-107,982,456.48-45,213,897.51

Finding the Fourth Proportional to 78,265,707.96, 107,982,456.48 and 45,213,897.51

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Solution

The fourth proportional to 78,265,707.96, 107,982,456.48 and 45,213,897.51 is: 62,381,186.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,265,707.96 : 107,982,456.48 = 45,213,897.51 : x
  2. Step 2: Convert to fraction form
    78,265,707.96/107,982,456.48 = 45,213,897.51/x
  3. Step 3: Cross multiply
    78,265,707.96x = 107,982,456.48 × 45,213,897.51
  4. Step 4: Simplify right side
    78,265,707.96x = 4,882,307,720,164,755
  5. Step 5: Solve for x
    x = 4,882,307,720,164,755/78,265,707.96
  6. Step 6: Final answer
    x = 62,381,186.44

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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.