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Finding the Fourth Proportional to 53,967.10, 80,950.65 and 42,691.90

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Solution

The fourth proportional to 53,967.10, 80,950.65 and 42,691.90 is: 64,037.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,967.10 : 80,950.65 = 42,691.90 : x
  2. Step 2: Convert to fraction form
    53,967.10/80,950.65 = 42,691.90/x
  3. Step 3: Cross multiply
    53,967.10x = 80,950.65 × 42,691.90
  4. Step 4: Simplify right side
    53,967.10x = 3,455,937,054.74
  5. Step 5: Solve for x
    x = 3,455,937,054.74/53,967.10
  6. Step 6: Final answer
    x = 64,037.85

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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.