Home / 71,215.49-98,212.34-61,140.71

Finding the Fourth Proportional to 71,215.49, 98,212.34 and 61,140.71

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Solution

The fourth proportional to 71,215.49, 98,212.34 and 61,140.71 is: 84,318.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,215.49 : 98,212.34 = 61,140.71 : x
  2. Step 2: Convert to fraction form
    71,215.49/98,212.34 = 61,140.71/x
  3. Step 3: Cross multiply
    71,215.49x = 98,212.34 × 61,140.71
  4. Step 4: Simplify right side
    71,215.49x = 6,004,771,860.15
  5. Step 5: Solve for x
    x = 6,004,771,860.15/71,215.49
  6. Step 6: Final answer
    x = 84,318.35

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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.