Home / 56,620.29-78,136.74-31,126.53

Finding the Fourth Proportional to 56,620.29, 78,136.74 and 31,126.53

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Solution

The fourth proportional to 56,620.29, 78,136.74 and 31,126.53 is: 42,955.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,620.29 : 78,136.74 = 31,126.53 : x
  2. Step 2: Convert to fraction form
    56,620.29/78,136.74 = 31,126.53/x
  3. Step 3: Cross multiply
    56,620.29x = 78,136.74 × 31,126.53
  4. Step 4: Simplify right side
    56,620.29x = 2,432,125,581.71
  5. Step 5: Solve for x
    x = 2,432,125,581.71/56,620.29
  6. Step 6: Final answer
    x = 42,955.02

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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.