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Finding the Fourth Proportional to 66,329.72, 99,501.12 and 21,356.22

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Solution

The fourth proportional to 66,329.72, 99,501.12 and 21,356.22 is: 32,036.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,329.72 : 99,501.12 = 21,356.22 : x
  2. Step 2: Convert to fraction form
    66,329.72/99,501.12 = 21,356.22/x
  3. Step 3: Cross multiply
    66,329.72x = 99,501.12 × 21,356.22
  4. Step 4: Simplify right side
    66,329.72x = 2,124,967,808.97
  5. Step 5: Solve for x
    x = 2,124,967,808.97/66,329.72
  6. Step 6: Final answer
    x = 32,036.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.