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Finding the Fourth Proportional to 64,959.84, 89,642.88 and 36,278.72

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Solution

The fourth proportional to 64,959.84, 89,642.88 and 36,278.72 is: 50,063.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,959.84 : 89,642.88 = 36,278.72 : x
  2. Step 2: Convert to fraction form
    64,959.84/89,642.88 = 36,278.72/x
  3. Step 3: Cross multiply
    64,959.84x = 89,642.88 × 36,278.72
  4. Step 4: Simplify right side
    64,959.84x = 3,252,128,943.51
  5. Step 5: Solve for x
    x = 3,252,128,943.51/64,959.84
  6. Step 6: Final answer
    x = 50,063.68

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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.