Home / 80,957.07-111,807.88-61,630.67

Finding the Fourth Proportional to 80,957.07, 111,807.88 and 61,630.67

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Solution

The fourth proportional to 80,957.07, 111,807.88 and 61,630.67 is: 85,116.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,957.07 : 111,807.88 = 61,630.67 : x
  2. Step 2: Convert to fraction form
    80,957.07/111,807.88 = 61,630.67/x
  3. Step 3: Cross multiply
    80,957.07x = 111,807.88 × 61,630.67
  4. Step 4: Simplify right side
    80,957.07x = 6,890,794,681.12
  5. Step 5: Solve for x
    x = 6,890,794,681.12/80,957.07
  6. Step 6: Final answer
    x = 85,116.65

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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.