Home / 56,071.32-84,120.48-21,011.28

Finding the Fourth Proportional to 56,071.32, 84,120.48 and 21,011.28

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Solution

The fourth proportional to 56,071.32, 84,120.48 and 21,011.28 is: 31,521.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,071.32 : 84,120.48 = 21,011.28 : x
  2. Step 2: Convert to fraction form
    56,071.32/84,120.48 = 21,011.28/x
  3. Step 3: Cross multiply
    56,071.32x = 84,120.48 × 21,011.28
  4. Step 4: Simplify right side
    56,071.32x = 1,767,478,959.01
  5. Step 5: Solve for x
    x = 1,767,478,959.01/56,071.32
  6. Step 6: Final answer
    x = 31,521.98

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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.