Home / 81,440.33-112,386.57-45,631.04

Finding the Fourth Proportional to 81,440.33, 112,386.57 and 45,631.04

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Solution

The fourth proportional to 81,440.33, 112,386.57 and 45,631.04 is: 62,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,440.33 : 112,386.57 = 45,631.04 : x
  2. Step 2: Convert to fraction form
    81,440.33/112,386.57 = 45,631.04/x
  3. Step 3: Cross multiply
    81,440.33x = 112,386.57 × 45,631.04
  4. Step 4: Simplify right side
    81,440.33x = 5,128,316,071.13
  5. Step 5: Solve for x
    x = 5,128,316,071.13/81,440.33
  6. Step 6: Final answer
    x = 62,970.23

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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.