Home / 78,116,001.68-107,811,242.32-43,316,431.76

Finding the Fourth Proportional to 78,116,001.68, 107,811,242.32 and 43,316,431.76

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Solution

The fourth proportional to 78,116,001.68, 107,811,242.32 and 43,316,431.76 is: 59,782,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,116,001.68 : 107,811,242.32 = 43,316,431.76 : x
  2. Step 2: Convert to fraction form
    78,116,001.68/107,811,242.32 = 43,316,431.76/x
  3. Step 3: Cross multiply
    78,116,001.68x = 107,811,242.32 × 43,316,431.76
  4. Step 4: Simplify right side
    78,116,001.68x = 4,669,998,320,915,104
  5. Step 5: Solve for x
    x = 4,669,998,320,915,104/78,116,001.68
  6. Step 6: Final answer
    x = 59,782,864.21

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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.