Home / 47,985.81-66,207.13-30,990.77

Finding the Fourth Proportional to 47,985.81, 66,207.13 and 30,990.77

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Solution

The fourth proportional to 47,985.81, 66,207.13 and 30,990.77 is: 42,758.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,985.81 : 66,207.13 = 30,990.77 : x
  2. Step 2: Convert to fraction form
    47,985.81/66,207.13 = 30,990.77/x
  3. Step 3: Cross multiply
    47,985.81x = 66,207.13 × 30,990.77
  4. Step 4: Simplify right side
    47,985.81x = 2,051,809,777.95
  5. Step 5: Solve for x
    x = 2,051,809,777.95/47,985.81
  6. Step 6: Final answer
    x = 42,758.68

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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.