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Finding the Fourth Proportional to 77,646.76, 107,127.84 and 45,366.64

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Solution

The fourth proportional to 77,646.76, 107,127.84 and 45,366.64 is: 62,591.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,646.76 : 107,127.84 = 45,366.64 : x
  2. Step 2: Convert to fraction form
    77,646.76/107,127.84 = 45,366.64/x
  3. Step 3: Cross multiply
    77,646.76x = 107,127.84 × 45,366.64
  4. Step 4: Simplify right side
    77,646.76x = 4,860,030,151.26
  5. Step 5: Solve for x
    x = 4,860,030,151.26/77,646.76
  6. Step 6: Final answer
    x = 62,591.54

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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.