Home / 62,640.08-86,416.80-38,725.28

Finding the Fourth Proportional to 62,640.08, 86,416.80 and 38,725.28

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Solution

The fourth proportional to 62,640.08, 86,416.80 and 38,725.28 is: 53,424.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,640.08 : 86,416.80 = 38,725.28 : x
  2. Step 2: Convert to fraction form
    62,640.08/86,416.80 = 38,725.28/x
  3. Step 3: Cross multiply
    62,640.08x = 86,416.80 × 38,725.28
  4. Step 4: Simplify right side
    62,640.08x = 3,346,514,776.70
  5. Step 5: Solve for x
    x = 3,346,514,776.70/62,640.08
  6. Step 6: Final answer
    x = 53,424.50

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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.