Home / 56,821.08-78,415.76-31,670.76

Finding the Fourth Proportional to 56,821.08, 78,415.76 and 31,670.76

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Solution

The fourth proportional to 56,821.08, 78,415.76 and 31,670.76 is: 43,707.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,821.08 : 78,415.76 = 31,670.76 : x
  2. Step 2: Convert to fraction form
    56,821.08/78,415.76 = 31,670.76/x
  3. Step 3: Cross multiply
    56,821.08x = 78,415.76 × 31,670.76
  4. Step 4: Simplify right side
    56,821.08x = 2,483,486,715.18
  5. Step 5: Solve for x
    x = 2,483,486,715.18/56,821.08
  6. Step 6: Final answer
    x = 43,707.14

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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.