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Finding the Fourth Proportional to 74,709.57, 103,136.58 and 47,513.01

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Solution

The fourth proportional to 74,709.57, 103,136.58 and 47,513.01 is: 65,591.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,709.57 : 103,136.58 = 47,513.01 : x
  2. Step 2: Convert to fraction form
    74,709.57/103,136.58 = 47,513.01/x
  3. Step 3: Cross multiply
    74,709.57x = 103,136.58 × 47,513.01
  4. Step 4: Simplify right side
    74,709.57x = 4,900,329,356.91
  5. Step 5: Solve for x
    x = 4,900,329,356.91/74,709.57
  6. Step 6: Final answer
    x = 65,591.72

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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.