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Finding the Fourth Proportional to 61,868.70, 85,378.98 and 37,995.12

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Solution

The fourth proportional to 61,868.70, 85,378.98 and 37,995.12 is: 52,433.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,868.70 : 85,378.98 = 37,995.12 : x
  2. Step 2: Convert to fraction form
    61,868.70/85,378.98 = 37,995.12/x
  3. Step 3: Cross multiply
    61,868.70x = 85,378.98 × 37,995.12
  4. Step 4: Simplify right side
    61,868.70x = 3,243,984,590.58
  5. Step 5: Solve for x
    x = 3,243,984,590.58/61,868.70
  6. Step 6: Final answer
    x = 52,433.37

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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.