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Finding the Fourth Proportional to 84,045.96, 115,980.48 and 45,804.72

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Solution

The fourth proportional to 84,045.96, 115,980.48 and 45,804.72 is: 63,208.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,045.96 : 115,980.48 = 45,804.72 : x
  2. Step 2: Convert to fraction form
    84,045.96/115,980.48 = 45,804.72/x
  3. Step 3: Cross multiply
    84,045.96x = 115,980.48 × 45,804.72
  4. Step 4: Simplify right side
    84,045.96x = 5,312,453,411.87
  5. Step 5: Solve for x
    x = 5,312,453,411.87/84,045.96
  6. Step 6: Final answer
    x = 63,208.91

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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.