Home / 85,306.75-117,726.96-47,581

Finding the Fourth Proportional to 85,306.75, 117,726.96 and 47,581

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Solution

The fourth proportional to 85,306.75, 117,726.96 and 47,581 is: 65,663.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,306.75 : 117,726.96 = 47,581 : x
  2. Step 2: Convert to fraction form
    85,306.75/117,726.96 = 47,581/x
  3. Step 3: Cross multiply
    85,306.75x = 117,726.96 × 47,581
  4. Step 4: Simplify right side
    85,306.75x = 5,601,566,483.76
  5. Step 5: Solve for x
    x = 5,601,566,483.76/85,306.75
  6. Step 6: Final answer
    x = 65,663.81

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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.