Home / 71,680.32-98,914.23-39,848.40

Finding the Fourth Proportional to 71,680.32, 98,914.23 and 39,848.40

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Solution

The fourth proportional to 71,680.32, 98,914.23 and 39,848.40 is: 54,988.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,680.32 : 98,914.23 = 39,848.40 : x
  2. Step 2: Convert to fraction form
    71,680.32/98,914.23 = 39,848.40/x
  3. Step 3: Cross multiply
    71,680.32x = 98,914.23 × 39,848.40
  4. Step 4: Simplify right side
    71,680.32x = 3,941,573,802.73
  5. Step 5: Solve for x
    x = 3,941,573,802.73/71,680.32
  6. Step 6: Final answer
    x = 54,988.23

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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.