Home / 52,158.70-78,218.40-18,870.53

Finding the Fourth Proportional to 52,158.70, 78,218.40 and 18,870.53

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Solution

The fourth proportional to 52,158.70, 78,218.40 and 18,870.53 is: 28,298.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,158.70 : 78,218.40 = 18,870.53 : x
  2. Step 2: Convert to fraction form
    52,158.70/78,218.40 = 18,870.53/x
  3. Step 3: Cross multiply
    52,158.70x = 78,218.40 × 18,870.53
  4. Step 4: Simplify right side
    52,158.70x = 1,476,022,663.75
  5. Step 5: Solve for x
    x = 1,476,022,663.75/52,158.70
  6. Step 6: Final answer
    x = 28,298.69

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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.