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Finding the Fourth Proportional to 89,862.70, 134,876.80 and 45,520.32

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Solution

The fourth proportional to 89,862.70, 134,876.80 and 45,520.32 is: 68,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,862.70 : 134,876.80 = 45,520.32 : x
  2. Step 2: Convert to fraction form
    89,862.70/134,876.80 = 45,520.32/x
  3. Step 3: Cross multiply
    89,862.70x = 134,876.80 × 45,520.32
  4. Step 4: Simplify right side
    89,862.70x = 6,139,635,096.58
  5. Step 5: Solve for x
    x = 6,139,635,096.58/89,862.70
  6. Step 6: Final answer
    x = 68,322.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.