Home / 66,865.12-92,276.88-38,187.28

Finding the Fourth Proportional to 66,865.12, 92,276.88 and 38,187.28

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Solution

The fourth proportional to 66,865.12, 92,276.88 and 38,187.28 is: 52,700.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,865.12 : 92,276.88 = 38,187.28 : x
  2. Step 2: Convert to fraction form
    66,865.12/92,276.88 = 38,187.28/x
  3. Step 3: Cross multiply
    66,865.12x = 92,276.88 × 38,187.28
  4. Step 4: Simplify right side
    66,865.12x = 3,523,803,054.09
  5. Step 5: Solve for x
    x = 3,523,803,054.09/66,865.12
  6. Step 6: Final answer
    x = 52,700.17

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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.