Home / 81,715.17-112,754.66-45,898.32

Finding the Fourth Proportional to 81,715.17, 112,754.66 and 45,898.32

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Solution

The fourth proportional to 81,715.17, 112,754.66 and 45,898.32 is: 63,332.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,715.17 : 112,754.66 = 45,898.32 : x
  2. Step 2: Convert to fraction form
    81,715.17/112,754.66 = 45,898.32/x
  3. Step 3: Cross multiply
    81,715.17x = 112,754.66 × 45,898.32
  4. Step 4: Simplify right side
    81,715.17x = 5,175,249,466.17
  5. Step 5: Solve for x
    x = 5,175,249,466.17/81,715.17
  6. Step 6: Final answer
    x = 63,332.79

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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.