Home / 48,421.12-66,776.76-31,407.64

Finding the Fourth Proportional to 48,421.12, 66,776.76 and 31,407.64

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Solution

The fourth proportional to 48,421.12, 66,776.76 and 31,407.64 is: 43,313.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,421.12 : 66,776.76 = 31,407.64 : x
  2. Step 2: Convert to fraction form
    48,421.12/66,776.76 = 31,407.64/x
  3. Step 3: Cross multiply
    48,421.12x = 66,776.76 × 31,407.64
  4. Step 4: Simplify right side
    48,421.12x = 2,097,300,438.45
  5. Step 5: Solve for x
    x = 2,097,300,438.45/48,421.12
  6. Step 6: Final answer
    x = 43,313.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.