Home / 66,001.96-91,074.54-42,142.60

Finding the Fourth Proportional to 66,001.96, 91,074.54 and 42,142.60

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Solution

The fourth proportional to 66,001.96, 91,074.54 and 42,142.60 is: 58,151.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,001.96 : 91,074.54 = 42,142.60 : x
  2. Step 2: Convert to fraction form
    66,001.96/91,074.54 = 42,142.60/x
  3. Step 3: Cross multiply
    66,001.96x = 91,074.54 × 42,142.60
  4. Step 4: Simplify right side
    66,001.96x = 3,838,117,909.40
  5. Step 5: Solve for x
    x = 3,838,117,909.40/66,001.96
  6. Step 6: Final answer
    x = 58,151.57

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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.