Home / 82,904.40-124,270.20-45,406.80

Finding the Fourth Proportional to 82,904.40, 124,270.20 and 45,406.80

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Solution

The fourth proportional to 82,904.40, 124,270.20 and 45,406.80 is: 68,062.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,904.40 : 124,270.20 = 45,406.80 : x
  2. Step 2: Convert to fraction form
    82,904.40/124,270.20 = 45,406.80/x
  3. Step 3: Cross multiply
    82,904.40x = 124,270.20 × 45,406.80
  4. Step 4: Simplify right side
    82,904.40x = 5,642,712,117.36
  5. Step 5: Solve for x
    x = 5,642,712,117.36/82,904.40
  6. Step 6: Final answer
    x = 68,062.88

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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.