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Finding the Fourth Proportional to 89,509.86, 134,264.80 and 42,620.58

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Solution

The fourth proportional to 89,509.86, 134,264.80 and 42,620.58 is: 63,930.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,509.86 : 134,264.80 = 42,620.58 : x
  2. Step 2: Convert to fraction form
    89,509.86/134,264.80 = 42,620.58/x
  3. Step 3: Cross multiply
    89,509.86x = 134,264.80 × 42,620.58
  4. Step 4: Simplify right side
    89,509.86x = 5,722,443,649.58
  5. Step 5: Solve for x
    x = 5,722,443,649.58/89,509.86
  6. Step 6: Final answer
    x = 63,930.87

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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.