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Finding the Fourth Proportional to 56,482.80, 78,027.40 and 45,137.44

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Solution

The fourth proportional to 56,482.80, 78,027.40 and 45,137.44 is: 62,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,482.80 : 78,027.40 = 45,137.44 : x
  2. Step 2: Convert to fraction form
    56,482.80/78,027.40 = 45,137.44/x
  3. Step 3: Cross multiply
    56,482.80x = 78,027.40 × 45,137.44
  4. Step 4: Simplify right side
    56,482.80x = 3,521,957,085.86
  5. Step 5: Solve for x
    x = 3,521,957,085.86/56,482.80
  6. Step 6: Final answer
    x = 62,354.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.