Home / 74,931.57-112,394.76-18,772.16

Finding the Fourth Proportional to 74,931.57, 112,394.76 and 18,772.16

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Solution

The fourth proportional to 74,931.57, 112,394.76 and 18,772.16 is: 28,157.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,931.57 : 112,394.76 = 18,772.16 : x
  2. Step 2: Convert to fraction form
    74,931.57/112,394.76 = 18,772.16/x
  3. Step 3: Cross multiply
    74,931.57x = 112,394.76 × 18,772.16
  4. Step 4: Simplify right side
    74,931.57x = 2,109,891,855.91
  5. Step 5: Solve for x
    x = 2,109,891,855.91/74,931.57
  6. Step 6: Final answer
    x = 28,157.58

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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.