Home / 72,421.07-108,641.96-27,430.30

Finding the Fourth Proportional to 72,421.07, 108,641.96 and 27,430.30

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Solution

The fourth proportional to 72,421.07, 108,641.96 and 27,430.30 is: 41,149.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,421.07 : 108,641.96 = 27,430.30 : x
  2. Step 2: Convert to fraction form
    72,421.07/108,641.96 = 27,430.30/x
  3. Step 3: Cross multiply
    72,421.07x = 108,641.96 × 27,430.30
  4. Step 4: Simplify right side
    72,421.07x = 2,980,081,045.79
  5. Step 5: Solve for x
    x = 2,980,081,045.79/72,421.07
  6. Step 6: Final answer
    x = 41,149.36

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1.5x scale

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.