Home / 63,533.12-87,679.33-38,390.72

Finding the Fourth Proportional to 63,533.12, 87,679.33 and 38,390.72

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Solution

The fourth proportional to 63,533.12, 87,679.33 and 38,390.72 is: 52,981.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,533.12 : 87,679.33 = 38,390.72 : x
  2. Step 2: Convert to fraction form
    63,533.12/87,679.33 = 38,390.72/x
  3. Step 3: Cross multiply
    63,533.12x = 87,679.33 × 38,390.72
  4. Step 4: Simplify right side
    63,533.12x = 3,366,072,073.44
  5. Step 5: Solve for x
    x = 3,366,072,073.44/63,533.12
  6. Step 6: Final answer
    x = 52,981.38

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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.