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Finding the Fourth Proportional to 72,604, 99,882.48 and 69,493.60

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Solution

The fourth proportional to 72,604, 99,882.48 and 69,493.60 is: 95,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604 : 99,882.48 = 69,493.60 : x
  2. Step 2: Convert to fraction form
    72,604/99,882.48 = 69,493.60/x
  3. Step 3: Cross multiply
    72,604x = 99,882.48 × 69,493.60
  4. Step 4: Simplify right side
    72,604x = 6,941,193,112.13
  5. Step 5: Solve for x
    x = 6,941,193,112.13/72,604
  6. Step 6: Final answer
    x = 95,603.45

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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.