Home / 87,117.46-120,271.35-66,661.06

Finding the Fourth Proportional to 87,117.46, 120,271.35 and 66,661.06

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Solution

The fourth proportional to 87,117.46, 120,271.35 and 66,661.06 is: 92,029.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,117.46 : 120,271.35 = 66,661.06 : x
  2. Step 2: Convert to fraction form
    87,117.46/120,271.35 = 66,661.06/x
  3. Step 3: Cross multiply
    87,117.46x = 120,271.35 × 66,661.06
  4. Step 4: Simplify right side
    87,117.46x = 8,017,415,678.63
  5. Step 5: Solve for x
    x = 8,017,415,678.63/87,117.46
  6. Step 6: Final answer
    x = 92,029.95

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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.