Home / 53,407.89-79,964.19-40,220.28

Finding the Fourth Proportional to 53,407.89, 79,964.19 and 40,220.28

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Solution

The fourth proportional to 53,407.89, 79,964.19 and 40,220.28 is: 60,219.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,407.89 : 79,964.19 = 40,220.28 : x
  2. Step 2: Convert to fraction form
    53,407.89/79,964.19 = 40,220.28/x
  3. Step 3: Cross multiply
    53,407.89x = 79,964.19 × 40,220.28
  4. Step 4: Simplify right side
    53,407.89x = 3,216,182,111.77
  5. Step 5: Solve for x
    x = 3,216,182,111.77/53,407.89
  6. Step 6: Final answer
    x = 60,219.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.