Home / 66,108.29-91,220.25-38,885.60

Finding the Fourth Proportional to 66,108.29, 91,220.25 and 38,885.60

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Solution

The fourth proportional to 66,108.29, 91,220.25 and 38,885.60 is: 53,656.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,108.29 : 91,220.25 = 38,885.60 : x
  2. Step 2: Convert to fraction form
    66,108.29/91,220.25 = 38,885.60/x
  3. Step 3: Cross multiply
    66,108.29x = 91,220.25 × 38,885.60
  4. Step 4: Simplify right side
    66,108.29x = 3,547,153,697.30
  5. Step 5: Solve for x
    x = 3,547,153,697.30/66,108.29
  6. Step 6: Final answer
    x = 53,656.72

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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.