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Finding the Fourth Proportional to 64,590.62, 89,136.07 and 35,520.20

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Solution

The fourth proportional to 64,590.62, 89,136.07 and 35,520.20 is: 49,018.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,590.62 : 89,136.07 = 35,520.20 : x
  2. Step 2: Convert to fraction form
    64,590.62/89,136.07 = 35,520.20/x
  3. Step 3: Cross multiply
    64,590.62x = 89,136.07 × 35,520.20
  4. Step 4: Simplify right side
    64,590.62x = 3,166,130,499.13
  5. Step 5: Solve for x
    x = 3,166,130,499.13/64,590.62
  6. Step 6: Final answer
    x = 49,018.42

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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.