Home / 81,212.13-112,075.20-45,403.65

Finding the Fourth Proportional to 81,212.13, 112,075.20 and 45,403.65

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Solution

The fourth proportional to 81,212.13, 112,075.20 and 45,403.65 is: 62,658.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,212.13 : 112,075.20 = 45,403.65 : x
  2. Step 2: Convert to fraction form
    81,212.13/112,075.20 = 45,403.65/x
  3. Step 3: Cross multiply
    81,212.13x = 112,075.20 × 45,403.65
  4. Step 4: Simplify right side
    81,212.13x = 5,088,623,154.48
  5. Step 5: Solve for x
    x = 5,088,623,154.48/81,212.13
  6. Step 6: Final answer
    x = 62,658.41

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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.