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Finding the Fourth Proportional to 81,617.83, 112,633.08 and 45,319.79

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Solution

The fourth proportional to 81,617.83, 112,633.08 and 45,319.79 is: 62,541.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,617.83 : 112,633.08 = 45,319.79 : x
  2. Step 2: Convert to fraction form
    81,617.83/112,633.08 = 45,319.79/x
  3. Step 3: Cross multiply
    81,617.83x = 112,633.08 × 45,319.79
  4. Step 4: Simplify right side
    81,617.83x = 5,104,506,969.49
  5. Step 5: Solve for x
    x = 5,104,506,969.49/81,617.83
  6. Step 6: Final answer
    x = 62,541.57

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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.