Home / 66,628.08-91,820.16-47,732.40

Finding the Fourth Proportional to 66,628.08, 91,820.16 and 47,732.40

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Solution

The fourth proportional to 66,628.08, 91,820.16 and 47,732.40 is: 65,780.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,628.08 : 91,820.16 = 47,732.40 : x
  2. Step 2: Convert to fraction form
    66,628.08/91,820.16 = 47,732.40/x
  3. Step 3: Cross multiply
    66,628.08x = 91,820.16 × 47,732.40
  4. Step 4: Simplify right side
    66,628.08x = 4,382,796,605.18
  5. Step 5: Solve for x
    x = 4,382,796,605.18/66,628.08
  6. Step 6: Final answer
    x = 65,780.02

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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.