Home / 64,549.08-89,067.28-40,347.20

Finding the Fourth Proportional to 64,549.08, 89,067.28 and 40,347.20

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Solution

The fourth proportional to 64,549.08, 89,067.28 and 40,347.20 is: 55,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,549.08 : 89,067.28 = 40,347.20 : x
  2. Step 2: Convert to fraction form
    64,549.08/89,067.28 = 40,347.20/x
  3. Step 3: Cross multiply
    64,549.08x = 89,067.28 × 40,347.20
  4. Step 4: Simplify right side
    64,549.08x = 3,593,615,359.62
  5. Step 5: Solve for x
    x = 3,593,615,359.62/64,549.08
  6. Step 6: Final answer
    x = 55,672.60

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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.