Home / 86,045.34-118,709.40-63,438.07

Finding the Fourth Proportional to 86,045.34, 118,709.40 and 63,438.07

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Solution

The fourth proportional to 86,045.34, 118,709.40 and 63,438.07 is: 87,520.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,045.34 : 118,709.40 = 63,438.07 : x
  2. Step 2: Convert to fraction form
    86,045.34/118,709.40 = 63,438.07/x
  3. Step 3: Cross multiply
    86,045.34x = 118,709.40 × 63,438.07
  4. Step 4: Simplify right side
    86,045.34x = 7,530,695,226.86
  5. Step 5: Solve for x
    x = 7,530,695,226.86/86,045.34
  6. Step 6: Final answer
    x = 87,520.08

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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.