Home / 85,741.17-128,617.98-29,580.53

Finding the Fourth Proportional to 85,741.17, 128,617.98 and 29,580.53

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Solution

The fourth proportional to 85,741.17, 128,617.98 and 29,580.53 is: 44,372.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,741.17 : 128,617.98 = 29,580.53 : x
  2. Step 2: Convert to fraction form
    85,741.17/128,617.98 = 29,580.53/x
  3. Step 3: Cross multiply
    85,741.17x = 128,617.98 × 29,580.53
  4. Step 4: Simplify right side
    85,741.17x = 3,804,587,261.91
  5. Step 5: Solve for x
    x = 3,804,587,261.91/85,741.17
  6. Step 6: Final answer
    x = 44,372.94

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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.