Home / 42,716.07-64,080.23-13,136.40

Finding the Fourth Proportional to 42,716.07, 64,080.23 and 13,136.40

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Solution

The fourth proportional to 42,716.07, 64,080.23 and 13,136.40 is: 19,706.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,716.07 : 64,080.23 = 13,136.40 : x
  2. Step 2: Convert to fraction form
    42,716.07/64,080.23 = 13,136.40/x
  3. Step 3: Cross multiply
    42,716.07x = 64,080.23 × 13,136.40
  4. Step 4: Simplify right side
    42,716.07x = 841,783,533.37
  5. Step 5: Solve for x
    x = 841,783,533.37/42,716.07
  6. Step 6: Final answer
    x = 19,706.48

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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.