Home / 70,781,240.79-97,681,142.78-39,419,289.57

Finding the Fourth Proportional to 70,781,240.79, 97,681,142.78 and 39,419,289.57

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Solution

The fourth proportional to 70,781,240.79, 97,681,142.78 and 39,419,289.57 is: 54,400,307.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,781,240.79 : 97,681,142.78 = 39,419,289.57 : x
  2. Step 2: Convert to fraction form
    70,781,240.79/97,681,142.78 = 39,419,289.57/x
  3. Step 3: Cross multiply
    70,781,240.79x = 97,681,142.78 × 39,419,289.57
  4. Step 4: Simplify right side
    70,781,240.79x = 3,850,521,252,576,238.50
  5. Step 5: Solve for x
    x = 3,850,521,252,576,238.50/70,781,240.79
  6. Step 6: Final answer
    x = 54,400,307.34

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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.