Home / 42,731.40-64,077.90-16,427.40

Finding the Fourth Proportional to 42,731.40, 64,077.90 and 16,427.40

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Solution

The fourth proportional to 42,731.40, 64,077.90 and 16,427.40 is: 24,633.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,731.40 : 64,077.90 = 16,427.40 : x
  2. Step 2: Convert to fraction form
    42,731.40/64,077.90 = 16,427.40/x
  3. Step 3: Cross multiply
    42,731.40x = 64,077.90 × 16,427.40
  4. Step 4: Simplify right side
    42,731.40x = 1,052,633,294.46
  5. Step 5: Solve for x
    x = 1,052,633,294.46/42,731.40
  6. Step 6: Final answer
    x = 24,633.72

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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.