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Finding the Fourth Proportional to 79,710.40, 119,643.84 and 60,814.72

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Solution

The fourth proportional to 79,710.40, 119,643.84 and 60,814.72 is: 91,281.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,710.40 : 119,643.84 = 60,814.72 : x
  2. Step 2: Convert to fraction form
    79,710.40/119,643.84 = 60,814.72/x
  3. Step 3: Cross multiply
    79,710.40x = 119,643.84 × 60,814.72
  4. Step 4: Simplify right side
    79,710.40x = 7,276,106,629.32
  5. Step 5: Solve for x
    x = 7,276,106,629.32/79,710.40
  6. Step 6: Final answer
    x = 91,281.77

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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.