Home / 72,470.02-100,014.40-40,207.80

Finding the Fourth Proportional to 72,470.02, 100,014.40 and 40,207.80

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Solution

The fourth proportional to 72,470.02, 100,014.40 and 40,207.80 is: 55,489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,470.02 : 100,014.40 = 40,207.80 : x
  2. Step 2: Convert to fraction form
    72,470.02/100,014.40 = 40,207.80/x
  3. Step 3: Cross multiply
    72,470.02x = 100,014.40 × 40,207.80
  4. Step 4: Simplify right side
    72,470.02x = 4,021,358,992.32
  5. Step 5: Solve for x
    x = 4,021,358,992.32/72,470.02
  6. Step 6: Final answer
    x = 55,489.97

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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.