Home / 86,715.10-130,146.72-61,816.06

Finding the Fourth Proportional to 86,715.10, 130,146.72 and 61,816.06

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Solution

The fourth proportional to 86,715.10, 130,146.72 and 61,816.06 is: 92,776.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,715.10 : 130,146.72 = 61,816.06 : x
  2. Step 2: Convert to fraction form
    86,715.10/130,146.72 = 61,816.06/x
  3. Step 3: Cross multiply
    86,715.10x = 130,146.72 × 61,816.06
  4. Step 4: Simplify right side
    86,715.10x = 8,045,157,452.32
  5. Step 5: Solve for x
    x = 8,045,157,452.32/86,715.10
  6. Step 6: Final answer
    x = 92,776.89

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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.