Home / 72,040.41-99,421.40-40,214.10

Finding the Fourth Proportional to 72,040.41, 99,421.40 and 40,214.10

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Solution

The fourth proportional to 72,040.41, 99,421.40 and 40,214.10 is: 55,498.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,040.41 : 99,421.40 = 40,214.10 : x
  2. Step 2: Convert to fraction form
    72,040.41/99,421.40 = 40,214.10/x
  3. Step 3: Cross multiply
    72,040.41x = 99,421.40 × 40,214.10
  4. Step 4: Simplify right side
    72,040.41x = 3,998,142,121.74
  5. Step 5: Solve for x
    x = 3,998,142,121.74/72,040.41
  6. Step 6: Final answer
    x = 55,498.60

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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.