Home / 38,970.70-53,779.27-30,481.49

Finding the Fourth Proportional to 38,970.70, 53,779.27 and 30,481.49

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Solution

The fourth proportional to 38,970.70, 53,779.27 and 30,481.49 is: 42,064.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,970.70 : 53,779.27 = 30,481.49 : x
  2. Step 2: Convert to fraction form
    38,970.70/53,779.27 = 30,481.49/x
  3. Step 3: Cross multiply
    38,970.70x = 53,779.27 × 30,481.49
  4. Step 4: Simplify right side
    38,970.70x = 1,639,272,280.71
  5. Step 5: Solve for x
    x = 1,639,272,280.71/38,970.70
  6. Step 6: Final answer
    x = 42,064.22

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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.