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Finding the Fourth Proportional to 56,911.70, 78,501.49 and 34,555.70

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Solution

The fourth proportional to 56,911.70, 78,501.49 and 34,555.70 is: 47,664.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,911.70 : 78,501.49 = 34,555.70 : x
  2. Step 2: Convert to fraction form
    56,911.70/78,501.49 = 34,555.70/x
  3. Step 3: Cross multiply
    56,911.70x = 78,501.49 × 34,555.70
  4. Step 4: Simplify right side
    56,911.70x = 2,712,673,937.99
  5. Step 5: Solve for x
    x = 2,712,673,937.99/56,911.70
  6. Step 6: Final answer
    x = 47,664.61

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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.