Home / 99,030.66-136,659.75-56,589.20

Finding the Fourth Proportional to 99,030.66, 136,659.75 and 56,589.20

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Solution

The fourth proportional to 99,030.66, 136,659.75 and 56,589.20 is: 78,091.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,030.66 : 136,659.75 = 56,589.20 : x
  2. Step 2: Convert to fraction form
    99,030.66/136,659.75 = 56,589.20/x
  3. Step 3: Cross multiply
    99,030.66x = 136,659.75 × 56,589.20
  4. Step 4: Simplify right side
    99,030.66x = 7,733,465,241.40
  5. Step 5: Solve for x
    x = 7,733,465,241.40/99,030.66
  6. Step 6: Final answer
    x = 78,091.63

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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.