Home / 40,803.51-61,156.04-21,071.28

Finding the Fourth Proportional to 40,803.51, 61,156.04 and 21,071.28

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Solution

The fourth proportional to 40,803.51, 61,156.04 and 21,071.28 is: 31,581.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,803.51 : 61,156.04 = 21,071.28 : x
  2. Step 2: Convert to fraction form
    40,803.51/61,156.04 = 21,071.28/x
  3. Step 3: Cross multiply
    40,803.51x = 61,156.04 × 21,071.28
  4. Step 4: Simplify right side
    40,803.51x = 1,288,635,937.17
  5. Step 5: Solve for x
    x = 1,288,635,937.17/40,803.51
  6. Step 6: Final answer
    x = 31,581.50

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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.