Home / 42,065.64-63,137.34-21,303.72

Finding the Fourth Proportional to 42,065.64, 63,137.34 and 21,303.72

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Solution

The fourth proportional to 42,065.64, 63,137.34 and 21,303.72 is: 31,975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,065.64 : 63,137.34 = 21,303.72 : x
  2. Step 2: Convert to fraction form
    42,065.64/63,137.34 = 21,303.72/x
  3. Step 3: Cross multiply
    42,065.64x = 63,137.34 × 21,303.72
  4. Step 4: Simplify right side
    42,065.64x = 1,345,060,212.90
  5. Step 5: Solve for x
    x = 1,345,060,212.90/42,065.64
  6. Step 6: Final answer
    x = 31,975.27

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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.