Home / 42,729.80-64,104.78-16,435.40

Finding the Fourth Proportional to 42,729.80, 64,104.78 and 16,435.40

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Solution

The fourth proportional to 42,729.80, 64,104.78 and 16,435.40 is: 24,656.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,729.80 : 64,104.78 = 16,435.40 : x
  2. Step 2: Convert to fraction form
    42,729.80/64,104.78 = 16,435.40/x
  3. Step 3: Cross multiply
    42,729.80x = 64,104.78 × 16,435.40
  4. Step 4: Simplify right side
    42,729.80x = 1,053,587,701.21
  5. Step 5: Solve for x
    x = 1,053,587,701.21/42,729.80
  6. Step 6: Final answer
    x = 24,656.98

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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.