Home / 71,220.75-98,276.13-39,385.32

Finding the Fourth Proportional to 71,220.75, 98,276.13 and 39,385.32

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Solution

The fourth proportional to 71,220.75, 98,276.13 and 39,385.32 is: 54,347.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,220.75 : 98,276.13 = 39,385.32 : x
  2. Step 2: Convert to fraction form
    71,220.75/98,276.13 = 39,385.32/x
  3. Step 3: Cross multiply
    71,220.75x = 98,276.13 × 39,385.32
  4. Step 4: Simplify right side
    71,220.75x = 3,870,636,828.41
  5. Step 5: Solve for x
    x = 3,870,636,828.41/71,220.75
  6. Step 6: Final answer
    x = 54,347.04

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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.