Home / 70,781,209.89-97,681,100.12-39,419,258.78

Finding the Fourth Proportional to 70,781,209.89, 97,681,100.12 and 39,419,258.78

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Solution

The fourth proportional to 70,781,209.89, 97,681,100.12 and 39,419,258.78 is: 54,400,264.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,781,209.89 : 97,681,100.12 = 39,419,258.78 : x
  2. Step 2: Convert to fraction form
    70,781,209.89/97,681,100.12 = 39,419,258.78/x
  3. Step 3: Cross multiply
    70,781,209.89x = 97,681,100.12 × 39,419,258.78
  4. Step 4: Simplify right side
    70,781,209.89x = 3,850,516,563,412,574.50
  5. Step 5: Solve for x
    x = 3,850,516,563,412,574.50/70,781,209.89
  6. Step 6: Final answer
    x = 54,400,264.84

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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.