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Finding the Fourth Proportional to 105,031.53, 144,945.99 and 57,289.32

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Solution

The fourth proportional to 105,031.53, 144,945.99 and 57,289.32 is: 79,060.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,031.53 : 144,945.99 = 57,289.32 : x
  2. Step 2: Convert to fraction form
    105,031.53/144,945.99 = 57,289.32/x
  3. Step 3: Cross multiply
    105,031.53x = 144,945.99 × 57,289.32
  4. Step 4: Simplify right side
    105,031.53x = 8,303,857,203.83
  5. Step 5: Solve for x
    x = 8,303,857,203.83/105,031.53
  6. Step 6: Final answer
    x = 79,060.61

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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.