Home / 74,931.77-112,395.05-18,772.36

Finding the Fourth Proportional to 74,931.77, 112,395.05 and 18,772.36

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Solution

The fourth proportional to 74,931.77, 112,395.05 and 18,772.36 is: 28,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,931.77 : 112,395.05 = 18,772.36 : x
  2. Step 2: Convert to fraction form
    74,931.77/112,395.05 = 18,772.36/x
  3. Step 3: Cross multiply
    74,931.77x = 112,395.05 × 18,772.36
  4. Step 4: Simplify right side
    74,931.77x = 2,109,920,059.83
  5. Step 5: Solve for x
    x = 2,109,920,059.83/74,931.77
  6. Step 6: Final answer
    x = 28,157.88

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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.