Home / 90,719.12-136,043.64-29,914.76

Finding the Fourth Proportional to 90,719.12, 136,043.64 and 29,914.76

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Solution

The fourth proportional to 90,719.12, 136,043.64 and 29,914.76 is: 44,860.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,719.12 : 136,043.64 = 29,914.76 : x
  2. Step 2: Convert to fraction form
    90,719.12/136,043.64 = 29,914.76/x
  3. Step 3: Cross multiply
    90,719.12x = 136,043.64 × 29,914.76
  4. Step 4: Simplify right side
    90,719.12x = 4,069,712,840.13
  5. Step 5: Solve for x
    x = 4,069,712,840.13/90,719.12
  6. Step 6: Final answer
    x = 44,860.59

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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.