Home / 90,639.12-125,068.10-50,349.18

Finding the Fourth Proportional to 90,639.12, 125,068.10 and 50,349.18

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Solution

The fourth proportional to 90,639.12, 125,068.10 and 50,349.18 is: 69,474.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,639.12 : 125,068.10 = 50,349.18 : x
  2. Step 2: Convert to fraction form
    90,639.12/125,068.10 = 50,349.18/x
  3. Step 3: Cross multiply
    90,639.12x = 125,068.10 × 50,349.18
  4. Step 4: Simplify right side
    90,639.12x = 6,297,076,279.16
  5. Step 5: Solve for x
    x = 6,297,076,279.16/90,639.12
  6. Step 6: Final answer
    x = 69,474.16

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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.