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Finding the Fourth Proportional to 62,304.50, 85,980.29 and 39,948.50

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Solution

The fourth proportional to 62,304.50, 85,980.29 and 39,948.50 is: 55,128.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,304.50 : 85,980.29 = 39,948.50 : x
  2. Step 2: Convert to fraction form
    62,304.50/85,980.29 = 39,948.50/x
  3. Step 3: Cross multiply
    62,304.50x = 85,980.29 × 39,948.50
  4. Step 4: Simplify right side
    62,304.50x = 3,434,783,615.07
  5. Step 5: Solve for x
    x = 3,434,783,615.07/62,304.50
  6. Step 6: Final answer
    x = 55,128.98

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1.5x scale

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.