Home / 78,330.12-117,512.46-25,737.36

Finding the Fourth Proportional to 78,330.12, 117,512.46 and 25,737.36

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Solution

The fourth proportional to 78,330.12, 117,512.46 and 25,737.36 is: 38,611.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.12 : 117,512.46 = 25,737.36 : x
  2. Step 2: Convert to fraction form
    78,330.12/117,512.46 = 25,737.36/x
  3. Step 3: Cross multiply
    78,330.12x = 117,512.46 × 25,737.36
  4. Step 4: Simplify right side
    78,330.12x = 3,024,460,487.51
  5. Step 5: Solve for x
    x = 3,024,460,487.51/78,330.12
  6. Step 6: Final answer
    x = 38,611.72

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1.5x scale

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.