Home / 66,712.36-100,073.74-19,328.13

Finding the Fourth Proportional to 66,712.36, 100,073.74 and 19,328.13

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Solution

The fourth proportional to 66,712.36, 100,073.74 and 19,328.13 is: 28,993.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,712.36 : 100,073.74 = 19,328.13 : x
  2. Step 2: Convert to fraction form
    66,712.36/100,073.74 = 19,328.13/x
  3. Step 3: Cross multiply
    66,712.36x = 100,073.74 × 19,328.13
  4. Step 4: Simplify right side
    66,712.36x = 1,934,238,256.31
  5. Step 5: Solve for x
    x = 1,934,238,256.31/66,712.36
  6. Step 6: Final answer
    x = 28,993.70

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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.