Home / 81,013.08-111,803.45-45,203.86

Finding the Fourth Proportional to 81,013.08, 111,803.45 and 45,203.86

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Solution

The fourth proportional to 81,013.08, 111,803.45 and 45,203.86 is: 62,384.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,013.08 : 111,803.45 = 45,203.86 : x
  2. Step 2: Convert to fraction form
    81,013.08/111,803.45 = 45,203.86/x
  3. Step 3: Cross multiply
    81,013.08x = 111,803.45 × 45,203.86
  4. Step 4: Simplify right side
    81,013.08x = 5,053,947,501.32
  5. Step 5: Solve for x
    x = 5,053,947,501.32/81,013.08
  6. Step 6: Final answer
    x = 62,384.34

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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.