Home / 90,653.32-125,000.72-61,977.66

Finding the Fourth Proportional to 90,653.32, 125,000.72 and 61,977.66

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Solution

The fourth proportional to 90,653.32, 125,000.72 and 61,977.66 is: 85,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,653.32 : 125,000.72 = 61,977.66 : x
  2. Step 2: Convert to fraction form
    90,653.32/125,000.72 = 61,977.66/x
  3. Step 3: Cross multiply
    90,653.32x = 125,000.72 × 61,977.66
  4. Step 4: Simplify right side
    90,653.32x = 7,747,252,123.92
  5. Step 5: Solve for x
    x = 7,747,252,123.92/90,653.32
  6. Step 6: Final answer
    x = 85,460.21

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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.