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Finding the Fourth Proportional to 55,700.57, 76,866.78 and 30,550.07

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Solution

The fourth proportional to 55,700.57, 76,866.78 and 30,550.07 is: 42,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,700.57 : 76,866.78 = 30,550.07 : x
  2. Step 2: Convert to fraction form
    55,700.57/76,866.78 = 30,550.07/x
  3. Step 3: Cross multiply
    55,700.57x = 76,866.78 × 30,550.07
  4. Step 4: Simplify right side
    55,700.57x = 2,348,285,509.67
  5. Step 5: Solve for x
    x = 2,348,285,509.67/55,700.57
  6. Step 6: Final answer
    x = 42,159.09

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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.