Home / 66,479.51-91,740.12-38,187.02

Finding the Fourth Proportional to 66,479.51, 91,740.12 and 38,187.02

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Solution

The fourth proportional to 66,479.51, 91,740.12 and 38,187.02 is: 52,697.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,479.51 : 91,740.12 = 38,187.02 : x
  2. Step 2: Convert to fraction form
    66,479.51/91,740.12 = 38,187.02/x
  3. Step 3: Cross multiply
    66,479.51x = 91,740.12 × 38,187.02
  4. Step 4: Simplify right side
    66,479.51x = 3,503,281,797.24
  5. Step 5: Solve for x
    x = 3,503,281,797.24/66,479.51
  6. Step 6: Final answer
    x = 52,697.17

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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.