Home / 42,719.81-64,079.71-11,557.49

Finding the Fourth Proportional to 42,719.81, 64,079.71 and 11,557.49

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Solution

The fourth proportional to 42,719.81, 64,079.71 and 11,557.49 is: 17,336.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,719.81 : 64,079.71 = 11,557.49 : x
  2. Step 2: Convert to fraction form
    42,719.81/64,079.71 = 11,557.49/x
  3. Step 3: Cross multiply
    42,719.81x = 64,079.71 × 11,557.49
  4. Step 4: Simplify right side
    42,719.81x = 740,600,258.24
  5. Step 5: Solve for x
    x = 740,600,258.24/42,719.81
  6. Step 6: Final answer
    x = 17,336.23

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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.