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Finding the Fourth Proportional to 64,987.88, 89,682.52 and 36,694.76

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Solution

The fourth proportional to 64,987.88, 89,682.52 and 36,694.76 is: 50,638.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.88 : 89,682.52 = 36,694.76 : x
  2. Step 2: Convert to fraction form
    64,987.88/89,682.52 = 36,694.76/x
  3. Step 3: Cross multiply
    64,987.88x = 89,682.52 × 36,694.76
  4. Step 4: Simplify right side
    64,987.88x = 3,290,878,547.60
  5. Step 5: Solve for x
    x = 3,290,878,547.60/64,987.88
  6. Step 6: Final answer
    x = 50,638.34

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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.