Home / 84,430.88-126,646.28-31,828.05

Finding the Fourth Proportional to 84,430.88, 126,646.28 and 31,828.05

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Solution

The fourth proportional to 84,430.88, 126,646.28 and 31,828.05 is: 47,742.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,430.88 : 126,646.28 = 31,828.05 : x
  2. Step 2: Convert to fraction form
    84,430.88/126,646.28 = 31,828.05/x
  3. Step 3: Cross multiply
    84,430.88x = 126,646.28 × 31,828.05
  4. Step 4: Simplify right side
    84,430.88x = 4,030,903,973.01
  5. Step 5: Solve for x
    x = 4,030,903,973.01/84,430.88
  6. Step 6: Final answer
    x = 47,742.06

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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.