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Finding the Fourth Proportional to 61,378.53, 84,689.65 and 35,879.96

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Solution

The fourth proportional to 61,378.53, 84,689.65 and 35,879.96 is: 49,506.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,378.53 : 84,689.65 = 35,879.96 : x
  2. Step 2: Convert to fraction form
    61,378.53/84,689.65 = 35,879.96/x
  3. Step 3: Cross multiply
    61,378.53x = 84,689.65 × 35,879.96
  4. Step 4: Simplify right side
    61,378.53x = 3,038,661,510.99
  5. Step 5: Solve for x
    x = 3,038,661,510.99/61,378.53
  6. Step 6: Final answer
    x = 49,506.92

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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.