Home / 66,972.15-100,458.23-52,192.13

Finding the Fourth Proportional to 66,972.15, 100,458.23 and 52,192.13

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Solution

The fourth proportional to 66,972.15, 100,458.23 and 52,192.13 is: 78,288.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,972.15 : 100,458.23 = 52,192.13 : x
  2. Step 2: Convert to fraction form
    66,972.15/100,458.23 = 52,192.13/x
  3. Step 3: Cross multiply
    66,972.15x = 100,458.23 × 52,192.13
  4. Step 4: Simplify right side
    66,972.15x = 5,243,128,236.48
  5. Step 5: Solve for x
    x = 5,243,128,236.48/66,972.15
  6. Step 6: Final answer
    x = 78,288.19

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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.