Home / 65,851,813.40-98,777,720.10-20,427,531.80

Finding the Fourth Proportional to 65,851,813.40, 98,777,720.10 and 20,427,531.80

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Solution

The fourth proportional to 65,851,813.40, 98,777,720.10 and 20,427,531.80 is: 30,641,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,851,813.40 : 98,777,720.10 = 20,427,531.80 : x
  2. Step 2: Convert to fraction form
    65,851,813.40/98,777,720.10 = 20,427,531.80/x
  3. Step 3: Cross multiply
    65,851,813.40x = 98,777,720.10 × 20,427,531.80
  4. Step 4: Simplify right side
    65,851,813.40x = 2,017,785,018,474,249.25
  5. Step 5: Solve for x
    x = 2,017,785,018,474,249.25/65,851,813.40
  6. Step 6: Final answer
    x = 30,641,297.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.