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Finding the Fourth Proportional to 84,700.01, 117,023.31 and 72,086.49

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Solution

The fourth proportional to 84,700.01, 117,023.31 and 72,086.49 is: 99,596.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,700.01 : 117,023.31 = 72,086.49 : x
  2. Step 2: Convert to fraction form
    84,700.01/117,023.31 = 72,086.49/x
  3. Step 3: Cross multiply
    84,700.01x = 117,023.31 × 72,086.49
  4. Step 4: Simplify right side
    84,700.01x = 8,435,799,666.08
  5. Step 5: Solve for x
    x = 8,435,799,666.08/84,700.01
  6. Step 6: Final answer
    x = 99,596.21

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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.