Home / 52,100.46-78,150.69-12,657.31

Finding the Fourth Proportional to 52,100.46, 78,150.69 and 12,657.31

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Solution

The fourth proportional to 52,100.46, 78,150.69 and 12,657.31 is: 18,985.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,100.46 : 78,150.69 = 12,657.31 : x
  2. Step 2: Convert to fraction form
    52,100.46/78,150.69 = 12,657.31/x
  3. Step 3: Cross multiply
    52,100.46x = 78,150.69 × 12,657.31
  4. Step 4: Simplify right side
    52,100.46x = 989,177,314.67
  5. Step 5: Solve for x
    x = 989,177,314.67/52,100.46
  6. Step 6: Final answer
    x = 18,985.96

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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.