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Finding the Fourth Proportional to 64,802.88, 89,421.12 and 36,508.32

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Solution

The fourth proportional to 64,802.88, 89,421.12 and 36,508.32 is: 50,377.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,802.88 : 89,421.12 = 36,508.32 : x
  2. Step 2: Convert to fraction form
    64,802.88/89,421.12 = 36,508.32/x
  3. Step 3: Cross multiply
    64,802.88x = 89,421.12 × 36,508.32
  4. Step 4: Simplify right side
    64,802.88x = 3,264,614,863.72
  5. Step 5: Solve for x
    x = 3,264,614,863.72/64,802.88
  6. Step 6: Final answer
    x = 50,377.62

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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.