Home / 90,749.81-136,124.40-23,281.76

Finding the Fourth Proportional to 90,749.81, 136,124.40 and 23,281.76

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Solution

The fourth proportional to 90,749.81, 136,124.40 and 23,281.76 is: 34,922.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,749.81 : 136,124.40 = 23,281.76 : x
  2. Step 2: Convert to fraction form
    90,749.81/136,124.40 = 23,281.76/x
  3. Step 3: Cross multiply
    90,749.81x = 136,124.40 × 23,281.76
  4. Step 4: Simplify right side
    90,749.81x = 3,169,214,930.32
  5. Step 5: Solve for x
    x = 3,169,214,930.32/90,749.81
  6. Step 6: Final answer
    x = 34,922.55

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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.