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Finding the Fourth Proportional to 86,567.70, 129,851.55 and 36,631.20

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Solution

The fourth proportional to 86,567.70, 129,851.55 and 36,631.20 is: 54,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,567.70 : 129,851.55 = 36,631.20 : x
  2. Step 2: Convert to fraction form
    86,567.70/129,851.55 = 36,631.20/x
  3. Step 3: Cross multiply
    86,567.70x = 129,851.55 × 36,631.20
  4. Step 4: Simplify right side
    86,567.70x = 4,756,618,098.36
  5. Step 5: Solve for x
    x = 4,756,618,098.36/86,567.70
  6. Step 6: Final answer
    x = 54,946.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.