Home / 56,804.40-78,390.62-31,311.75

Finding the Fourth Proportional to 56,804.40, 78,390.62 and 31,311.75

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Solution

The fourth proportional to 56,804.40, 78,390.62 and 31,311.75 is: 43,210.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,804.40 : 78,390.62 = 31,311.75 : x
  2. Step 2: Convert to fraction form
    56,804.40/78,390.62 = 31,311.75/x
  3. Step 3: Cross multiply
    56,804.40x = 78,390.62 × 31,311.75
  4. Step 4: Simplify right side
    56,804.40x = 2,454,547,495.79
  5. Step 5: Solve for x
    x = 2,454,547,495.79/56,804.40
  6. Step 6: Final answer
    x = 43,210.52

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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.