Home / 66,515.30-99,772.95-53,393.30

Finding the Fourth Proportional to 66,515.30, 99,772.95 and 53,393.30

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Solution

The fourth proportional to 66,515.30, 99,772.95 and 53,393.30 is: 80,089.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,515.30 : 99,772.95 = 53,393.30 : x
  2. Step 2: Convert to fraction form
    66,515.30/99,772.95 = 53,393.30/x
  3. Step 3: Cross multiply
    66,515.30x = 99,772.95 × 53,393.30
  4. Step 4: Simplify right side
    66,515.30x = 5,327,207,051.24
  5. Step 5: Solve for x
    x = 5,327,207,051.24/66,515.30
  6. Step 6: Final answer
    x = 80,089.95

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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.