Home / 55,312.32-76,332.96-31,440

Finding the Fourth Proportional to 55,312.32, 76,332.96 and 31,440

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Solution

The fourth proportional to 55,312.32, 76,332.96 and 31,440 is: 43,388.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,312.32 : 76,332.96 = 31,440 : x
  2. Step 2: Convert to fraction form
    55,312.32/76,332.96 = 31,440/x
  3. Step 3: Cross multiply
    55,312.32x = 76,332.96 × 31,440
  4. Step 4: Simplify right side
    55,312.32x = 2,399,908,262.40
  5. Step 5: Solve for x
    x = 2,399,908,262.40/55,312.32
  6. Step 6: Final answer
    x = 43,388.31

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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.