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Finding the Fourth Proportional to 64,990.88, 89,688 and 35,182.88

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Solution

The fourth proportional to 64,990.88, 89,688 and 35,182.88 is: 48,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,990.88 : 89,688 = 35,182.88 : x
  2. Step 2: Convert to fraction form
    64,990.88/89,688 = 35,182.88/x
  3. Step 3: Cross multiply
    64,990.88x = 89,688 × 35,182.88
  4. Step 4: Simplify right side
    64,990.88x = 3,155,482,141.44
  5. Step 5: Solve for x
    x = 3,155,482,141.44/64,990.88
  6. Step 6: Final answer
    x = 48,552.69

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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.