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Finding the Fourth Proportional to 65,230.63, 90,005.92 and 61,908.82

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Solution

The fourth proportional to 65,230.63, 90,005.92 and 61,908.82 is: 85,422.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,230.63 : 90,005.92 = 61,908.82 : x
  2. Step 2: Convert to fraction form
    65,230.63/90,005.92 = 61,908.82/x
  3. Step 3: Cross multiply
    65,230.63x = 90,005.92 × 61,908.82
  4. Step 4: Simplify right side
    65,230.63x = 5,572,160,300.21
  5. Step 5: Solve for x
    x = 5,572,160,300.21/65,230.63
  6. Step 6: Final answer
    x = 85,422.45

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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.