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Finding the Fourth Proportional to 52,468.80, 78,856.80 and 45,710.40

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Solution

The fourth proportional to 52,468.80, 78,856.80 and 45,710.40 is: 68,699.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,468.80 : 78,856.80 = 45,710.40 : x
  2. Step 2: Convert to fraction form
    52,468.80/78,856.80 = 45,710.40/x
  3. Step 3: Cross multiply
    52,468.80x = 78,856.80 × 45,710.40
  4. Step 4: Simplify right side
    52,468.80x = 3,604,575,870.72
  5. Step 5: Solve for x
    x = 3,604,575,870.72/52,468.80
  6. Step 6: Final answer
    x = 68,699.42

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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.