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Finding the Fourth Proportional to 63,498.30, 87,588 and 40,866.90

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Solution

The fourth proportional to 63,498.30, 87,588 and 40,866.90 is: 56,370.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,498.30 : 87,588 = 40,866.90 : x
  2. Step 2: Convert to fraction form
    63,498.30/87,588 = 40,866.90/x
  3. Step 3: Cross multiply
    63,498.30x = 87,588 × 40,866.90
  4. Step 4: Simplify right side
    63,498.30x = 3,579,450,037.20
  5. Step 5: Solve for x
    x = 3,579,450,037.20/63,498.30
  6. Step 6: Final answer
    x = 56,370.80

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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.