Home / 78,749.76-118,126.80-25,444.02

Finding the Fourth Proportional to 78,749.76, 118,126.80 and 25,444.02

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Solution

The fourth proportional to 78,749.76, 118,126.80 and 25,444.02 is: 38,166.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,749.76 : 118,126.80 = 25,444.02 : x
  2. Step 2: Convert to fraction form
    78,749.76/118,126.80 = 25,444.02/x
  3. Step 3: Cross multiply
    78,749.76x = 118,126.80 × 25,444.02
  4. Step 4: Simplify right side
    78,749.76x = 3,005,620,661.74
  5. Step 5: Solve for x
    x = 3,005,620,661.74/78,749.76
  6. Step 6: Final answer
    x = 38,166.73

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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.