Home / 77,071.01-106,299.55-66,333.65

Finding the Fourth Proportional to 77,071.01, 106,299.55 and 66,333.65

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Solution

The fourth proportional to 77,071.01, 106,299.55 and 66,333.65 is: 91,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,071.01 : 106,299.55 = 66,333.65 : x
  2. Step 2: Convert to fraction form
    77,071.01/106,299.55 = 66,333.65/x
  3. Step 3: Cross multiply
    77,071.01x = 106,299.55 × 66,333.65
  4. Step 4: Simplify right side
    77,071.01x = 7,051,237,144.86
  5. Step 5: Solve for x
    x = 7,051,237,144.86/77,071.01
  6. Step 6: Final answer
    x = 91,490.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.