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Finding the Fourth Proportional to 78,476.01, 117,713.00 and 19,312.19

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Solution

The fourth proportional to 78,476.01, 117,713.00 and 19,312.19 is: 28,968.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,476.01 : 117,713.00 = 19,312.19 : x
  2. Step 2: Convert to fraction form
    78,476.01/117,713.00 = 19,312.19/x
  3. Step 3: Cross multiply
    78,476.01x = 117,713.00 × 19,312.19
  4. Step 4: Simplify right side
    78,476.01x = 2,273,295,136.34
  5. Step 5: Solve for x
    x = 2,273,295,136.34/78,476.01
  6. Step 6: Final answer
    x = 28,968.03

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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.