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Finding the Fourth Proportional to 64,940.78, 97,411.18 and 53,130.98

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Solution

The fourth proportional to 64,940.78, 97,411.18 and 53,130.98 is: 79,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,940.78 : 97,411.18 = 53,130.98 : x
  2. Step 2: Convert to fraction form
    64,940.78/97,411.18 = 53,130.98/x
  3. Step 3: Cross multiply
    64,940.78x = 97,411.18 × 53,130.98
  4. Step 4: Simplify right side
    64,940.78x = 5,175,551,456.36
  5. Step 5: Solve for x
    x = 5,175,551,456.36/64,940.78
  6. Step 6: Final answer
    x = 79,696.48

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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.