Home / 77,646.28-107,009.76-56,388.64

Finding the Fourth Proportional to 77,646.28, 107,009.76 and 56,388.64

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Solution

The fourth proportional to 77,646.28, 107,009.76 and 56,388.64 is: 77,713.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,646.28 : 107,009.76 = 56,388.64 : x
  2. Step 2: Convert to fraction form
    77,646.28/107,009.76 = 56,388.64/x
  3. Step 3: Cross multiply
    77,646.28x = 107,009.76 × 56,388.64
  4. Step 4: Simplify right side
    77,646.28x = 6,034,134,833.13
  5. Step 5: Solve for x
    x = 6,034,134,833.13/77,646.28
  6. Step 6: Final answer
    x = 77,713.12

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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.