Home / 52,100.39-78,150.57-12,657.23

Finding the Fourth Proportional to 52,100.39, 78,150.57 and 12,657.23

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Solution

The fourth proportional to 52,100.39, 78,150.57 and 12,657.23 is: 18,985.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,100.39 : 78,150.57 = 12,657.23 : x
  2. Step 2: Convert to fraction form
    52,100.39/78,150.57 = 12,657.23/x
  3. Step 3: Cross multiply
    52,100.39x = 78,150.57 × 12,657.23
  4. Step 4: Simplify right side
    52,100.39x = 989,169,739.12
  5. Step 5: Solve for x
    x = 989,169,739.12/52,100.39
  6. Step 6: Final answer
    x = 18,985.84

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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.