Home / 81,960.36-112,884.42-70,762.92

Finding the Fourth Proportional to 81,960.36, 112,884.42 and 70,762.92

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Solution

The fourth proportional to 81,960.36, 112,884.42 and 70,762.92 is: 97,462.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,960.36 : 112,884.42 = 70,762.92 : x
  2. Step 2: Convert to fraction form
    81,960.36/112,884.42 = 70,762.92/x
  3. Step 3: Cross multiply
    81,960.36x = 112,884.42 × 70,762.92
  4. Step 4: Simplify right side
    81,960.36x = 7,988,031,181.71
  5. Step 5: Solve for x
    x = 7,988,031,181.71/81,960.36
  6. Step 6: Final answer
    x = 97,462.13

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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.