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Finding the Fourth Proportional to 56,621.48, 78,002.58 and 39,593.88

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Solution

The fourth proportional to 56,621.48, 78,002.58 and 39,593.88 is: 54,545.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,621.48 : 78,002.58 = 39,593.88 : x
  2. Step 2: Convert to fraction form
    56,621.48/78,002.58 = 39,593.88/x
  3. Step 3: Cross multiply
    56,621.48x = 78,002.58 × 39,593.88
  4. Step 4: Simplify right side
    56,621.48x = 3,088,424,792.21
  5. Step 5: Solve for x
    x = 3,088,424,792.21/56,621.48
  6. Step 6: Final answer
    x = 54,545.11

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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.