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Finding the Fourth Proportional to 64,320.45, 96,490.02 and 19,950.78

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Solution

The fourth proportional to 64,320.45, 96,490.02 and 19,950.78 is: 29,929.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,320.45 : 96,490.02 = 19,950.78 : x
  2. Step 2: Convert to fraction form
    64,320.45/96,490.02 = 19,950.78/x
  3. Step 3: Cross multiply
    64,320.45x = 96,490.02 × 19,950.78
  4. Step 4: Simplify right side
    64,320.45x = 1,925,051,161.22
  5. Step 5: Solve for x
    x = 1,925,051,161.22/64,320.45
  6. Step 6: Final answer
    x = 29,929.07

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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.