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Finding the Fourth Proportional to 81,570.80, 112,573.08 and 45,763.16

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Solution

The fourth proportional to 81,570.80, 112,573.08 and 45,763.16 is: 63,156.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,570.80 : 112,573.08 = 45,763.16 : x
  2. Step 2: Convert to fraction form
    81,570.80/112,573.08 = 45,763.16/x
  3. Step 3: Cross multiply
    81,570.80x = 112,573.08 × 45,763.16
  4. Step 4: Simplify right side
    81,570.80x = 5,151,699,871.73
  5. Step 5: Solve for x
    x = 5,151,699,871.73/81,570.80
  6. Step 6: Final answer
    x = 63,156.18

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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.