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Finding the Fourth Proportional to 65,677.80, 90,644.76 and 37,386.12

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Solution

The fourth proportional to 65,677.80, 90,644.76 and 37,386.12 is: 51,598.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,677.80 : 90,644.76 = 37,386.12 : x
  2. Step 2: Convert to fraction form
    65,677.80/90,644.76 = 37,386.12/x
  3. Step 3: Cross multiply
    65,677.80x = 90,644.76 × 37,386.12
  4. Step 4: Simplify right side
    65,677.80x = 3,388,855,874.73
  5. Step 5: Solve for x
    x = 3,388,855,874.73/65,677.80
  6. Step 6: Final answer
    x = 51,598.19

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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.