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Finding the Fourth Proportional to 78,029.55, 116,880.30 and 64,907.55

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Solution

The fourth proportional to 78,029.55, 116,880.30 and 64,907.55 is: 97,224.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,029.55 : 116,880.30 = 64,907.55 : x
  2. Step 2: Convert to fraction form
    78,029.55/116,880.30 = 64,907.55/x
  3. Step 3: Cross multiply
    78,029.55x = 116,880.30 × 64,907.55
  4. Step 4: Simplify right side
    78,029.55x = 7,586,413,916.27
  5. Step 5: Solve for x
    x = 7,586,413,916.27/78,029.55
  6. Step 6: Final answer
    x = 97,224.88

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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.