Home / 52,131.10-78,196.02-12,688.30

Finding the Fourth Proportional to 52,131.10, 78,196.02 and 12,688.30

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Solution

The fourth proportional to 52,131.10, 78,196.02 and 12,688.30 is: 19,032.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,131.10 : 78,196.02 = 12,688.30 : x
  2. Step 2: Convert to fraction form
    52,131.10/78,196.02 = 12,688.30/x
  3. Step 3: Cross multiply
    52,131.10x = 78,196.02 × 12,688.30
  4. Step 4: Simplify right side
    52,131.10x = 992,174,560.57
  5. Step 5: Solve for x
    x = 992,174,560.57/52,131.10
  6. Step 6: Final answer
    x = 19,032.30

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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.