Home / 78,811.40-118,152.30-41,875.40

Finding the Fourth Proportional to 78,811.40, 118,152.30 and 41,875.40

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Solution

The fourth proportional to 78,811.40, 118,152.30 and 41,875.40 is: 62,778.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,811.40 : 118,152.30 = 41,875.40 : x
  2. Step 2: Convert to fraction form
    78,811.40/118,152.30 = 41,875.40/x
  3. Step 3: Cross multiply
    78,811.40x = 118,152.30 × 41,875.40
  4. Step 4: Simplify right side
    78,811.40x = 4,947,674,823.42
  5. Step 5: Solve for x
    x = 4,947,674,823.42/78,811.40
  6. Step 6: Final answer
    x = 62,778.67

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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.