Home / 55,981.45-77,254.47-30,487.86

Finding the Fourth Proportional to 55,981.45, 77,254.47 and 30,487.86

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Solution

The fourth proportional to 55,981.45, 77,254.47 and 30,487.86 is: 42,073.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,981.45 : 77,254.47 = 30,487.86 : x
  2. Step 2: Convert to fraction form
    55,981.45/77,254.47 = 30,487.86/x
  3. Step 3: Cross multiply
    55,981.45x = 77,254.47 × 30,487.86
  4. Step 4: Simplify right side
    55,981.45x = 2,355,323,465.73
  5. Step 5: Solve for x
    x = 2,355,323,465.73/55,981.45
  6. Step 6: Final answer
    x = 42,073.28

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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.