Home / 71,217.36-98,280.54-39,386.88

Finding the Fourth Proportional to 71,217.36, 98,280.54 and 39,386.88

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Solution

The fourth proportional to 71,217.36, 98,280.54 and 39,386.88 is: 54,354.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,217.36 : 98,280.54 = 39,386.88 : x
  2. Step 2: Convert to fraction form
    71,217.36/98,280.54 = 39,386.88/x
  3. Step 3: Cross multiply
    71,217.36x = 98,280.54 × 39,386.88
  4. Step 4: Simplify right side
    71,217.36x = 3,870,963,835.32
  5. Step 5: Solve for x
    x = 3,870,963,835.32/71,217.36
  6. Step 6: Final answer
    x = 54,354.22

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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.