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Finding the Fourth Proportional to 56,148.64, 77,481.80 and 30,649.94

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Solution

The fourth proportional to 56,148.64, 77,481.80 and 30,649.94 is: 42,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,148.64 : 77,481.80 = 30,649.94 : x
  2. Step 2: Convert to fraction form
    56,148.64/77,481.80 = 30,649.94/x
  3. Step 3: Cross multiply
    56,148.64x = 77,481.80 × 30,649.94
  4. Step 4: Simplify right side
    56,148.64x = 2,374,812,521.09
  5. Step 5: Solve for x
    x = 2,374,812,521.09/56,148.64
  6. Step 6: Final answer
    x = 42,295.10

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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.