Home / 52,109.76-78,164.06-12,666.91

Finding the Fourth Proportional to 52,109.76, 78,164.06 and 12,666.91

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Solution

The fourth proportional to 52,109.76, 78,164.06 and 12,666.91 is: 19,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,109.76 : 78,164.06 = 12,666.91 : x
  2. Step 2: Convert to fraction form
    52,109.76/78,164.06 = 12,666.91/x
  3. Step 3: Cross multiply
    52,109.76x = 78,164.06 × 12,666.91
  4. Step 4: Simplify right side
    52,109.76x = 990,096,888.11
  5. Step 5: Solve for x
    x = 990,096,888.11/52,109.76
  6. Step 6: Final answer
    x = 19,000.22

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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.