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Finding the Fourth Proportional to 56,398.55, 77,831.21 and 30,906.77

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Solution

The fourth proportional to 56,398.55, 77,831.21 and 30,906.77 is: 42,652.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,398.55 : 77,831.21 = 30,906.77 : x
  2. Step 2: Convert to fraction form
    56,398.55/77,831.21 = 30,906.77/x
  3. Step 3: Cross multiply
    56,398.55x = 77,831.21 × 30,906.77
  4. Step 4: Simplify right side
    56,398.55x = 2,405,510,994.40
  5. Step 5: Solve for x
    x = 2,405,510,994.40/56,398.55
  6. Step 6: Final answer
    x = 42,652.00

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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.