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Finding the Fourth Proportional to 66,477.20, 99,715.80 and 63,852.80

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Solution

The fourth proportional to 66,477.20, 99,715.80 and 63,852.80 is: 95,779.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,477.20 : 99,715.80 = 63,852.80 : x
  2. Step 2: Convert to fraction form
    66,477.20/99,715.80 = 63,852.80/x
  3. Step 3: Cross multiply
    66,477.20x = 99,715.80 × 63,852.80
  4. Step 4: Simplify right side
    66,477.20x = 6,367,133,034.24
  5. Step 5: Solve for x
    x = 6,367,133,034.24/66,477.20
  6. Step 6: Final answer
    x = 95,779.20

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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.