Home / 90,534.12-124,880.25-58,310.50

Finding the Fourth Proportional to 90,534.12, 124,880.25 and 58,310.50

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Solution

The fourth proportional to 90,534.12, 124,880.25 and 58,310.50 is: 80,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,534.12 : 124,880.25 = 58,310.50 : x
  2. Step 2: Convert to fraction form
    90,534.12/124,880.25 = 58,310.50/x
  3. Step 3: Cross multiply
    90,534.12x = 124,880.25 × 58,310.50
  4. Step 4: Simplify right side
    90,534.12x = 7,281,829,817.63
  5. Step 5: Solve for x
    x = 7,281,829,817.63/90,534.12
  6. Step 6: Final answer
    x = 80,431.88

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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.