Home / 52,136.72-78,186-18,848.80

Finding the Fourth Proportional to 52,136.72, 78,186 and 18,848.80

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Solution

The fourth proportional to 52,136.72, 78,186 and 18,848.80 is: 28,266.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,136.72 : 78,186 = 18,848.80 : x
  2. Step 2: Convert to fraction form
    52,136.72/78,186 = 18,848.80/x
  3. Step 3: Cross multiply
    52,136.72x = 78,186 × 18,848.80
  4. Step 4: Simplify right side
    52,136.72x = 1,473,712,276.80
  5. Step 5: Solve for x
    x = 1,473,712,276.80/52,136.72
  6. Step 6: Final answer
    x = 28,266.30

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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.