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Finding the Fourth Proportional to 85,341.98, 117,769.48 and 47,615.42

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Solution

The fourth proportional to 85,341.98, 117,769.48 and 47,615.42 is: 65,707.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,341.98 : 117,769.48 = 47,615.42 : x
  2. Step 2: Convert to fraction form
    85,341.98/117,769.48 = 47,615.42/x
  3. Step 3: Cross multiply
    85,341.98x = 117,769.48 × 47,615.42
  4. Step 4: Simplify right side
    85,341.98x = 5,607,642,545.50
  5. Step 5: Solve for x
    x = 5,607,642,545.50/85,341.98
  6. Step 6: Final answer
    x = 65,707.91

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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.