Home / 84,547.32-126,782.64-31,919.46

Finding the Fourth Proportional to 84,547.32, 126,782.64 and 31,919.46

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Solution

The fourth proportional to 84,547.32, 126,782.64 and 31,919.46 is: 47,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,547.32 : 126,782.64 = 31,919.46 : x
  2. Step 2: Convert to fraction form
    84,547.32/126,782.64 = 31,919.46/x
  3. Step 3: Cross multiply
    84,547.32x = 126,782.64 × 31,919.46
  4. Step 4: Simplify right side
    84,547.32x = 4,046,833,406.17
  5. Step 5: Solve for x
    x = 4,046,833,406.17/84,547.32
  6. Step 6: Final answer
    x = 47,864.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.