Home / 78,372,168.99-108,155,673.80-43,091,461.90

Finding the Fourth Proportional to 78,372,168.99, 108,155,673.80 and 43,091,461.90

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Solution

The fourth proportional to 78,372,168.99, 108,155,673.80 and 43,091,461.90 is: 59,467,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,372,168.99 : 108,155,673.80 = 43,091,461.90 : x
  2. Step 2: Convert to fraction form
    78,372,168.99/108,155,673.80 = 43,091,461.90/x
  3. Step 3: Cross multiply
    78,372,168.99x = 108,155,673.80 × 43,091,461.90
  4. Step 4: Simplify right side
    78,372,168.99x = 4,660,586,096,821,528
  5. Step 5: Solve for x
    x = 4,660,586,096,821,528/78,372,168.99
  6. Step 6: Final answer
    x = 59,467,361.40

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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.