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Finding the Fourth Proportional to 66,613.96, 91,823.70 and 45,356.68

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Solution

The fourth proportional to 66,613.96, 91,823.70 and 45,356.68 is: 62,521.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,613.96 : 91,823.70 = 45,356.68 : x
  2. Step 2: Convert to fraction form
    66,613.96/91,823.70 = 45,356.68/x
  3. Step 3: Cross multiply
    66,613.96x = 91,823.70 × 45,356.68
  4. Step 4: Simplify right side
    66,613.96x = 4,164,818,177.32
  5. Step 5: Solve for x
    x = 4,164,818,177.32/66,613.96
  6. Step 6: Final answer
    x = 62,521.70

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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.