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Finding the Fourth Proportional to 66,786, 92,164.68 and 38,493.51

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Solution

The fourth proportional to 66,786, 92,164.68 and 38,493.51 is: 53,121.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786 : 92,164.68 = 38,493.51 : x
  2. Step 2: Convert to fraction form
    66,786/92,164.68 = 38,493.51/x
  3. Step 3: Cross multiply
    66,786x = 92,164.68 × 38,493.51
  4. Step 4: Simplify right side
    66,786x = 3,547,742,031.23
  5. Step 5: Solve for x
    x = 3,547,742,031.23/66,786
  6. Step 6: Final answer
    x = 53,121.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.