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Finding the Fourth Proportional to 66,899.66, 92,320.76 and 38,604.74

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Solution

The fourth proportional to 66,899.66, 92,320.76 and 38,604.74 is: 53,274.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,899.66 : 92,320.76 = 38,604.74 : x
  2. Step 2: Convert to fraction form
    66,899.66/92,320.76 = 38,604.74/x
  3. Step 3: Cross multiply
    66,899.66x = 92,320.76 × 38,604.74
  4. Step 4: Simplify right side
    66,899.66x = 3,564,018,281.77
  5. Step 5: Solve for x
    x = 3,564,018,281.77/66,899.66
  6. Step 6: Final answer
    x = 53,274.09

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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.