Home / 86,045.85-118,710.09-63,438.57

Finding the Fourth Proportional to 86,045.85, 118,710.09 and 63,438.57

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Solution

The fourth proportional to 86,045.85, 118,710.09 and 63,438.57 is: 87,520.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,045.85 : 118,710.09 = 63,438.57 : x
  2. Step 2: Convert to fraction form
    86,045.85/118,710.09 = 63,438.57/x
  3. Step 3: Cross multiply
    86,045.85x = 118,710.09 × 63,438.57
  4. Step 4: Simplify right side
    86,045.85x = 7,530,798,354.17
  5. Step 5: Solve for x
    x = 7,530,798,354.17/86,045.85
  6. Step 6: Final answer
    x = 87,520.76

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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.