Home / 66,630.48-91,941.21-42,789.45

Finding the Fourth Proportional to 66,630.48, 91,941.21 and 42,789.45

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Solution

The fourth proportional to 66,630.48, 91,941.21 and 42,789.45 is: 59,043.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,630.48 : 91,941.21 = 42,789.45 : x
  2. Step 2: Convert to fraction form
    66,630.48/91,941.21 = 42,789.45/x
  3. Step 3: Cross multiply
    66,630.48x = 91,941.21 × 42,789.45
  4. Step 4: Simplify right side
    66,630.48x = 3,934,113,808.23
  5. Step 5: Solve for x
    x = 3,934,113,808.23/66,630.48
  6. Step 6: Final answer
    x = 59,043.76

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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.