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Finding the Fourth Proportional to 55,999.90, 83,999.85 and 45,502.30

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Solution

The fourth proportional to 55,999.90, 83,999.85 and 45,502.30 is: 68,253.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,999.90 : 83,999.85 = 45,502.30 : x
  2. Step 2: Convert to fraction form
    55,999.90/83,999.85 = 45,502.30/x
  3. Step 3: Cross multiply
    55,999.90x = 83,999.85 × 45,502.30
  4. Step 4: Simplify right side
    55,999.90x = 3,822,186,374.66
  5. Step 5: Solve for x
    x = 3,822,186,374.66/55,999.90
  6. Step 6: Final answer
    x = 68,253.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.