Home / 90,411.39-124,595.69-66,219.80

Finding the Fourth Proportional to 90,411.39, 124,595.69 and 66,219.80

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Solution

The fourth proportional to 90,411.39, 124,595.69 and 66,219.80 is: 91,257.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,411.39 : 124,595.69 = 66,219.80 : x
  2. Step 2: Convert to fraction form
    90,411.39/124,595.69 = 66,219.80/x
  3. Step 3: Cross multiply
    90,411.39x = 124,595.69 × 66,219.80
  4. Step 4: Simplify right side
    90,411.39x = 8,250,700,718.58
  5. Step 5: Solve for x
    x = 8,250,700,718.58/90,411.39
  6. Step 6: Final answer
    x = 91,257.32

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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.