Home / 52,618.08-78,875.82-21,018.72

Finding the Fourth Proportional to 52,618.08, 78,875.82 and 21,018.72

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Solution

The fourth proportional to 52,618.08, 78,875.82 and 21,018.72 is: 31,507.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,618.08 : 78,875.82 = 21,018.72 : x
  2. Step 2: Convert to fraction form
    52,618.08/78,875.82 = 21,018.72/x
  3. Step 3: Cross multiply
    52,618.08x = 78,875.82 × 21,018.72
  4. Step 4: Simplify right side
    52,618.08x = 1,657,868,775.35
  5. Step 5: Solve for x
    x = 1,657,868,775.35/52,618.08
  6. Step 6: Final answer
    x = 31,507.59

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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.