Home / 81,017.02-111,808.90-45,207.80

Finding the Fourth Proportional to 81,017.02, 111,808.90 and 45,207.80

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Solution

The fourth proportional to 81,017.02, 111,808.90 and 45,207.80 is: 62,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,017.02 : 111,808.90 = 45,207.80 : x
  2. Step 2: Convert to fraction form
    81,017.02/111,808.90 = 45,207.80/x
  3. Step 3: Cross multiply
    81,017.02x = 111,808.90 × 45,207.80
  4. Step 4: Simplify right side
    81,017.02x = 5,054,634,389.42
  5. Step 5: Solve for x
    x = 5,054,634,389.42/81,017.02
  6. Step 6: Final answer
    x = 62,389.78

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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.