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Finding the Fourth Proportional to 52,878.74, 79,316.99 and 12,897.84

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Solution

The fourth proportional to 52,878.74, 79,316.99 and 12,897.84 is: 19,346.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,878.74 : 79,316.99 = 12,897.84 : x
  2. Step 2: Convert to fraction form
    52,878.74/79,316.99 = 12,897.84/x
  3. Step 3: Cross multiply
    52,878.74x = 79,316.99 × 12,897.84
  4. Step 4: Simplify right side
    52,878.74x = 1,023,018,127.62
  5. Step 5: Solve for x
    x = 1,023,018,127.62/52,878.74
  6. Step 6: Final answer
    x = 19,346.49

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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.