Home / 90,749.79-136,139.21-31,602.27

Finding the Fourth Proportional to 90,749.79, 136,139.21 and 31,602.27

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Solution

The fourth proportional to 90,749.79, 136,139.21 and 31,602.27 is: 47,408.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,749.79 : 136,139.21 = 31,602.27 : x
  2. Step 2: Convert to fraction form
    90,749.79/136,139.21 = 31,602.27/x
  3. Step 3: Cross multiply
    90,749.79x = 136,139.21 × 31,602.27
  4. Step 4: Simplify right side
    90,749.79x = 4,302,307,914.00
  5. Step 5: Solve for x
    x = 4,302,307,914.00/90,749.79
  6. Step 6: Final answer
    x = 47,408.46

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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.