Home / 52,101.51-78,135.80-18,817.13

Finding the Fourth Proportional to 52,101.51, 78,135.80 and 18,817.13

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Solution

The fourth proportional to 52,101.51, 78,135.80 and 18,817.13 is: 28,219.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,101.51 : 78,135.80 = 18,817.13 : x
  2. Step 2: Convert to fraction form
    52,101.51/78,135.80 = 18,817.13/x
  3. Step 3: Cross multiply
    52,101.51x = 78,135.80 × 18,817.13
  4. Step 4: Simplify right side
    52,101.51x = 1,470,291,021.49
  5. Step 5: Solve for x
    x = 1,470,291,021.49/52,101.51
  6. Step 6: Final answer
    x = 28,219.74

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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.