Home / 85,947.06-128,972.43-36,699.06

Finding the Fourth Proportional to 85,947.06, 128,972.43 and 36,699.06

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Solution

The fourth proportional to 85,947.06, 128,972.43 and 36,699.06 is: 55,070.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,947.06 : 128,972.43 = 36,699.06 : x
  2. Step 2: Convert to fraction form
    85,947.06/128,972.43 = 36,699.06/x
  3. Step 3: Cross multiply
    85,947.06x = 128,972.43 × 36,699.06
  4. Step 4: Simplify right side
    85,947.06x = 4,733,166,946.92
  5. Step 5: Solve for x
    x = 4,733,166,946.92/85,947.06
  6. Step 6: Final answer
    x = 55,070.73

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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.