Home / 47,072.16-64,961.76-28,209.12

Finding the Fourth Proportional to 47,072.16, 64,961.76 and 28,209.12

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Solution

The fourth proportional to 47,072.16, 64,961.76 and 28,209.12 is: 38,929.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,072.16 : 64,961.76 = 28,209.12 : x
  2. Step 2: Convert to fraction form
    47,072.16/64,961.76 = 28,209.12/x
  3. Step 3: Cross multiply
    47,072.16x = 64,961.76 × 28,209.12
  4. Step 4: Simplify right side
    47,072.16x = 1,832,514,083.25
  5. Step 5: Solve for x
    x = 1,832,514,083.25/47,072.16
  6. Step 6: Final answer
    x = 38,929.89

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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.