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Finding the Fourth Proportional to 58,779.76, 81,136.08 and 36,119.64

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Solution

The fourth proportional to 58,779.76, 81,136.08 and 36,119.64 is: 49,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,779.76 : 81,136.08 = 36,119.64 : x
  2. Step 2: Convert to fraction form
    58,779.76/81,136.08 = 36,119.64/x
  3. Step 3: Cross multiply
    58,779.76x = 81,136.08 × 36,119.64
  4. Step 4: Simplify right side
    58,779.76x = 2,930,606,000.61
  5. Step 5: Solve for x
    x = 2,930,606,000.61/58,779.76
  6. Step 6: Final answer
    x = 49,857.40

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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.