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Finding the Fourth Proportional to 66,894.30, 92,301.12 and 39,665.34

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Solution

The fourth proportional to 66,894.30, 92,301.12 and 39,665.34 is: 54,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,894.30 : 92,301.12 = 39,665.34 : x
  2. Step 2: Convert to fraction form
    66,894.30/92,301.12 = 39,665.34/x
  3. Step 3: Cross multiply
    66,894.30x = 92,301.12 × 39,665.34
  4. Step 4: Simplify right side
    66,894.30x = 3,661,155,307.18
  5. Step 5: Solve for x
    x = 3,661,155,307.18/66,894.30
  6. Step 6: Final answer
    x = 54,730.45

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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.