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Finding the Fourth Proportional to 52,579, 78,856.70 and 15,130.72

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Solution

The fourth proportional to 52,579, 78,856.70 and 15,130.72 is: 22,692.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,579 : 78,856.70 = 15,130.72 : x
  2. Step 2: Convert to fraction form
    52,579/78,856.70 = 15,130.72/x
  3. Step 3: Cross multiply
    52,579x = 78,856.70 × 15,130.72
  4. Step 4: Simplify right side
    52,579x = 1,193,158,647.82
  5. Step 5: Solve for x
    x = 1,193,158,647.82/52,579
  6. Step 6: Final answer
    x = 22,692.68

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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.