Home / 61,052.40-84,256.20-39,888.72

Finding the Fourth Proportional to 61,052.40, 84,256.20 and 39,888.72

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Solution

The fourth proportional to 61,052.40, 84,256.20 and 39,888.72 is: 55,048.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,052.40 : 84,256.20 = 39,888.72 : x
  2. Step 2: Convert to fraction form
    61,052.40/84,256.20 = 39,888.72/x
  3. Step 3: Cross multiply
    61,052.40x = 84,256.20 × 39,888.72
  4. Step 4: Simplify right side
    61,052.40x = 3,360,871,970.06
  5. Step 5: Solve for x
    x = 3,360,871,970.06/61,052.40
  6. Step 6: Final answer
    x = 55,048.97

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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.