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Finding the Fourth Proportional to 66,900.42, 92,330.55 and 38,605.50

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Solution

The fourth proportional to 66,900.42, 92,330.55 and 38,605.50 is: 53,280.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,900.42 : 92,330.55 = 38,605.50 : x
  2. Step 2: Convert to fraction form
    66,900.42/92,330.55 = 38,605.50/x
  3. Step 3: Cross multiply
    66,900.42x = 92,330.55 × 38,605.50
  4. Step 4: Simplify right side
    66,900.42x = 3,564,467,048.03
  5. Step 5: Solve for x
    x = 3,564,467,048.03/66,900.42
  6. Step 6: Final answer
    x = 53,280.19

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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.