Home / 40,970.60-61,456.29-11,390.74

Finding the Fourth Proportional to 40,970.60, 61,456.29 and 11,390.74

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Solution

The fourth proportional to 40,970.60, 61,456.29 and 11,390.74 is: 17,086.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,970.60 : 61,456.29 = 11,390.74 : x
  2. Step 2: Convert to fraction form
    40,970.60/61,456.29 = 11,390.74/x
  3. Step 3: Cross multiply
    40,970.60x = 61,456.29 × 11,390.74
  4. Step 4: Simplify right side
    40,970.60x = 700,032,606.93
  5. Step 5: Solve for x
    x = 700,032,606.93/40,970.60
  6. Step 6: Final answer
    x = 17,086.22

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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.