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Finding the Fourth Proportional to 81,574.93, 112,574.49 and 45,762.80

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Solution

The fourth proportional to 81,574.93, 112,574.49 and 45,762.80 is: 63,153.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,574.93 : 112,574.49 = 45,762.80 : x
  2. Step 2: Convert to fraction form
    81,574.93/112,574.49 = 45,762.80/x
  3. Step 3: Cross multiply
    81,574.93x = 112,574.49 × 45,762.80
  4. Step 4: Simplify right side
    81,574.93x = 5,151,723,870.97
  5. Step 5: Solve for x
    x = 5,151,723,870.97/81,574.93
  6. Step 6: Final answer
    x = 63,153.28

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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.