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Finding the Fourth Proportional to 90,649.64, 136,060.92 and 55,657.64

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Solution

The fourth proportional to 90,649.64, 136,060.92 and 55,657.64 is: 83,539.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.64 : 136,060.92 = 55,657.64 : x
  2. Step 2: Convert to fraction form
    90,649.64/136,060.92 = 55,657.64/x
  3. Step 3: Cross multiply
    90,649.64x = 136,060.92 × 55,657.64
  4. Step 4: Simplify right side
    90,649.64x = 7,572,829,703.43
  5. Step 5: Solve for x
    x = 7,572,829,703.43/90,649.64
  6. Step 6: Final answer
    x = 83,539.55

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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.