Home / 42,064.64-63,135.84-21,302.72

Finding the Fourth Proportional to 42,064.64, 63,135.84 and 21,302.72

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Solution

The fourth proportional to 42,064.64, 63,135.84 and 21,302.72 is: 31,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,064.64 : 63,135.84 = 21,302.72 : x
  2. Step 2: Convert to fraction form
    42,064.64/63,135.84 = 21,302.72/x
  3. Step 3: Cross multiply
    42,064.64x = 63,135.84 × 21,302.72
  4. Step 4: Simplify right side
    42,064.64x = 1,344,965,121.48
  5. Step 5: Solve for x
    x = 1,344,965,121.48/42,064.64
  6. Step 6: Final answer
    x = 31,973.77

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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.