Home / 56,505.42-77,981.13-31,354.92

Finding the Fourth Proportional to 56,505.42, 77,981.13 and 31,354.92

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Solution

The fourth proportional to 56,505.42, 77,981.13 and 31,354.92 is: 43,271.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,505.42 : 77,981.13 = 31,354.92 : x
  2. Step 2: Convert to fraction form
    56,505.42/77,981.13 = 31,354.92/x
  3. Step 3: Cross multiply
    56,505.42x = 77,981.13 × 31,354.92
  4. Step 4: Simplify right side
    56,505.42x = 2,445,091,935.89
  5. Step 5: Solve for x
    x = 2,445,091,935.89/56,505.42
  6. Step 6: Final answer
    x = 43,271.81

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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.