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Finding the Fourth Proportional to 66,668.84, 92,026.16 and 38,385.80

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Solution

The fourth proportional to 66,668.84, 92,026.16 and 38,385.80 is: 52,985.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,668.84 : 92,026.16 = 38,385.80 : x
  2. Step 2: Convert to fraction form
    66,668.84/92,026.16 = 38,385.80/x
  3. Step 3: Cross multiply
    66,668.84x = 92,026.16 × 38,385.80
  4. Step 4: Simplify right side
    66,668.84x = 3,532,497,264.41
  5. Step 5: Solve for x
    x = 3,532,497,264.41/66,668.84
  6. Step 6: Final answer
    x = 52,985.74

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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.