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Finding the Fourth Proportional to 66,941.84, 92,378.98 and 38,646.92

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Solution

The fourth proportional to 66,941.84, 92,378.98 and 38,646.92 is: 53,332.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,941.84 : 92,378.98 = 38,646.92 : x
  2. Step 2: Convert to fraction form
    66,941.84/92,378.98 = 38,646.92/x
  3. Step 3: Cross multiply
    66,941.84x = 92,378.98 × 38,646.92
  4. Step 4: Simplify right side
    66,941.84x = 3,570,163,329.00
  5. Step 5: Solve for x
    x = 3,570,163,329.00/66,941.84
  6. Step 6: Final answer
    x = 53,332.31

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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.