Home / 56,278.68-77,663.62-31,128.16

Finding the Fourth Proportional to 56,278.68, 77,663.62 and 31,128.16

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Solution

The fourth proportional to 56,278.68, 77,663.62 and 31,128.16 is: 42,956.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,278.68 : 77,663.62 = 31,128.16 : x
  2. Step 2: Convert to fraction form
    56,278.68/77,663.62 = 31,128.16/x
  3. Step 3: Cross multiply
    56,278.68x = 77,663.62 × 31,128.16
  4. Step 4: Simplify right side
    56,278.68x = 2,417,525,589.54
  5. Step 5: Solve for x
    x = 2,417,525,589.54/56,278.68
  6. Step 6: Final answer
    x = 42,956.33

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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.