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Finding the Fourth Proportional to 86,352, 119,217.60 and 56,595.84

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Solution

The fourth proportional to 86,352, 119,217.60 and 56,595.84 is: 78,136.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,352 : 119,217.60 = 56,595.84 : x
  2. Step 2: Convert to fraction form
    86,352/119,217.60 = 56,595.84/x
  3. Step 3: Cross multiply
    86,352x = 119,217.60 × 56,595.84
  4. Step 4: Simplify right side
    86,352x = 6,747,220,214.78
  5. Step 5: Solve for x
    x = 6,747,220,214.78/86,352
  6. Step 6: Final answer
    x = 78,136.24

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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.