Home / 85,430.63-117,949.70-76,462.58

Finding the Fourth Proportional to 85,430.63, 117,949.70 and 76,462.58

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Solution

The fourth proportional to 85,430.63, 117,949.70 and 76,462.58 is: 105,567.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,430.63 : 117,949.70 = 76,462.58 : x
  2. Step 2: Convert to fraction form
    85,430.63/117,949.70 = 76,462.58/x
  3. Step 3: Cross multiply
    85,430.63x = 117,949.70 × 76,462.58
  4. Step 4: Simplify right side
    85,430.63x = 9,018,738,372.23
  5. Step 5: Solve for x
    x = 9,018,738,372.23/85,430.63
  6. Step 6: Final answer
    x = 105,567.97

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1.5x scale

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.