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Finding the Fourth Proportional to 76,368.30, 114,552.45 and 66,526.80

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Solution

The fourth proportional to 76,368.30, 114,552.45 and 66,526.80 is: 99,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,368.30 : 114,552.45 = 66,526.80 : x
  2. Step 2: Convert to fraction form
    76,368.30/114,552.45 = 66,526.80/x
  3. Step 3: Cross multiply
    76,368.30x = 114,552.45 × 66,526.80
  4. Step 4: Simplify right side
    76,368.30x = 7,620,807,930.66
  5. Step 5: Solve for x
    x = 7,620,807,930.66/76,368.30
  6. Step 6: Final answer
    x = 99,790.20

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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.