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Finding the Fourth Proportional to 86,510.98, 129,704.19 and 53,162.16

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Solution

The fourth proportional to 86,510.98, 129,704.19 and 53,162.16 is: 79,704.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,510.98 : 129,704.19 = 53,162.16 : x
  2. Step 2: Convert to fraction form
    86,510.98/129,704.19 = 53,162.16/x
  3. Step 3: Cross multiply
    86,510.98x = 129,704.19 × 53,162.16
  4. Step 4: Simplify right side
    86,510.98x = 6,895,354,901.45
  5. Step 5: Solve for x
    x = 6,895,354,901.45/86,510.98
  6. Step 6: Final answer
    x = 79,704.97

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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.