Home / 84,301.51-126,457.10-31,711.45

Finding the Fourth Proportional to 84,301.51, 126,457.10 and 31,711.45

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Solution

The fourth proportional to 84,301.51, 126,457.10 and 31,711.45 is: 47,568.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,301.51 : 126,457.10 = 31,711.45 : x
  2. Step 2: Convert to fraction form
    84,301.51/126,457.10 = 31,711.45/x
  3. Step 3: Cross multiply
    84,301.51x = 126,457.10 × 31,711.45
  4. Step 4: Simplify right side
    84,301.51x = 4,010,137,885.12
  5. Step 5: Solve for x
    x = 4,010,137,885.12/84,301.51
  6. Step 6: Final answer
    x = 47,568.99

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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.