Home / 81,720.16-112,784.35-45,910.21

Finding the Fourth Proportional to 81,720.16, 112,784.35 and 45,910.21

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Solution

The fourth proportional to 81,720.16, 112,784.35 and 45,910.21 is: 63,362.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,720.16 : 112,784.35 = 45,910.21 : x
  2. Step 2: Convert to fraction form
    81,720.16/112,784.35 = 45,910.21/x
  3. Step 3: Cross multiply
    81,720.16x = 112,784.35 × 45,910.21
  4. Step 4: Simplify right side
    81,720.16x = 5,177,953,094.03
  5. Step 5: Solve for x
    x = 5,177,953,094.03/81,720.16
  6. Step 6: Final answer
    x = 63,362.01

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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.