Home / 85,875.08-118,514.49-47,638.40

Finding the Fourth Proportional to 85,875.08, 118,514.49 and 47,638.40

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Solution

The fourth proportional to 85,875.08, 118,514.49 and 47,638.40 is: 65,744.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,875.08 : 118,514.49 = 47,638.40 : x
  2. Step 2: Convert to fraction form
    85,875.08/118,514.49 = 47,638.40/x
  3. Step 3: Cross multiply
    85,875.08x = 118,514.49 × 47,638.40
  4. Step 4: Simplify right side
    85,875.08x = 5,645,840,680.42
  5. Step 5: Solve for x
    x = 5,645,840,680.42/85,875.08
  6. Step 6: Final answer
    x = 65,744.81

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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.