Home / 84,460.90-126,741.28-31,190.20

Finding the Fourth Proportional to 84,460.90, 126,741.28 and 31,190.20

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Solution

The fourth proportional to 84,460.90, 126,741.28 and 31,190.20 is: 46,803.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,460.90 : 126,741.28 = 31,190.20 : x
  2. Step 2: Convert to fraction form
    84,460.90/126,741.28 = 31,190.20/x
  3. Step 3: Cross multiply
    84,460.90x = 126,741.28 × 31,190.20
  4. Step 4: Simplify right side
    84,460.90x = 3,953,085,871.46
  5. Step 5: Solve for x
    x = 3,953,085,871.46/84,460.90
  6. Step 6: Final answer
    x = 46,803.74

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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.