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Finding the Fourth Proportional to 64,869.84, 89,520.12 and 35,061.84

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Solution

The fourth proportional to 64,869.84, 89,520.12 and 35,061.84 is: 48,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,869.84 : 89,520.12 = 35,061.84 : x
  2. Step 2: Convert to fraction form
    64,869.84/89,520.12 = 35,061.84/x
  3. Step 3: Cross multiply
    64,869.84x = 89,520.12 × 35,061.84
  4. Step 4: Simplify right side
    64,869.84x = 3,138,740,124.22
  5. Step 5: Solve for x
    x = 3,138,740,124.22/64,869.84
  6. Step 6: Final answer
    x = 48,385.20

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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.