Home / 71,717.12-98,957.60-39,881.76

Finding the Fourth Proportional to 71,717.12, 98,957.60 and 39,881.76

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Solution

The fourth proportional to 71,717.12, 98,957.60 and 39,881.76 is: 55,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,717.12 : 98,957.60 = 39,881.76 : x
  2. Step 2: Convert to fraction form
    71,717.12/98,957.60 = 39,881.76/x
  3. Step 3: Cross multiply
    71,717.12x = 98,957.60 × 39,881.76
  4. Step 4: Simplify right side
    71,717.12x = 3,946,603,253.38
  5. Step 5: Solve for x
    x = 3,946,603,253.38/71,717.12
  6. Step 6: Final answer
    x = 55,030.14

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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.